ATI Radeon HD 4850 [Radeon HD 4850]

Categories » 3D chips » Products » ATI Radeon HD 4850 [Radeon HD 4850]

ATI Radeon HD 4850

PN: Radeon HD 4850 | Chip codename: RV770, Interface: PCI-Express 2.0 x16, Memory: 512 MB, Memory controller: 256 bit, DirectX version: DirectX 10.1, Unified Shaders: 800

General
Brand	ATI
Product name	Radeon HD 4850
Product code	Radeon HD 4850
Tested by HWI
Release date	23/06/2008
Price (min. / avg.)	£ 91,06 / £ 105,33

Specifications
Chip codename: RV770 , Interface: PCI-Express 2.0 x16 , Memory: 512 MB , Memory controller: 256 bit , DirectX version: DirectX 10.1 , Unified Shaders: 800
Click here for additional specifications

Reviews
Sapphire ATI Radeon HD 4850 X2 2GB	Bit-tech.net
RV770: ATI Radeon HD 4850 & 4870 analysis	Bit-tech.net
Sapphire ATI Radeon HD 4850 TOXIC	Bit-tech.net
ATI Radeon HD 4870/4850 Performance Preview	FiringSquad
Click here to see all reviews

Workswith7.com
User experiences 32-bit: 10x 0x	User experiences 64-bit: 23x 0x
Does this product work with Windows 7 32-bit? Yes, it works No, it does not work View other users' experiences	Does this product work with Windows 7 64-bit? Yes, it works No, it does not work View other users' experiences
Experiences Windows 7 32-bit: According joren45 this product is compatible (added on 30/09/2009) According Capronicus this product is compatible (added on 06/09/2009) According koffiejunk this product is compatible: (added on 14/08/2009) According Timebutt this product is compatible (added on 03/08/2009) According ItaloMike this product is compatible (added on 27/07/2009) According killman this product is compatible (added on 09/07/2009) According Killing Sprea this product is compatible (added on 23/06/2009) According DeltaLima this product is compatible (added on 23/06/2009) According Samiej6 this product is compatible (added on 22/06/2009) According Liquid_Gamer this product is compatible (added on 22/06/2009) Note: experiences date prior to October 22nd 2009 are based on the release candidate of Windows 7
Experiences Windows 7 64-bit: According Atlan this product is compatible: (added on 18/10/2009) According Strike-Back this product is compatible (added on 23/09/2009) According dvdtoon this product is compatible (added on 21/09/2009) According Capronicus this product is compatible (added on 06/09/2009) According sjoerdstegehuis this product is compatible: (added on 22/08/2009) According flx this product is compatible (added on 31/07/2009) According Origin32 this product is compatible (added on 28/07/2009) According erik22hgn this product is compatible (added on 27/07/2009) According dmystic this product is compatible (added on 25/07/2009) According FlawLess this product is compatible (added on 20/07/2009) According killman this product is compatible (added on 09/07/2009) According GWO this product is compatible (added on 07/07/2009) According pavdberg this product is compatible (added on 30/06/2009) According DDR4 this product is compatible: (added on 27/06/2009) According Luccey this product is compatible (added on 25/06/2009) According pruimman this product is compatible (added on 22/06/2009) According mdodo this product is compatible (added on 22/06/2009) According chupkes this product is compatible: (added on 22/06/2009) According Memesa this product is compatible (added on 22/06/2009) According riktw this product is compatible (added on 22/06/2009) According Twarxy this product is compatible (added on 22/06/2009) According Ghostface this product is compatible (added on 22/06/2009) According Liquid_Gamer this product is compatible (added on 22/06/2009) Note: experiences date prior to October 22nd 2009 are based on the release candidate of Windows 7

General
Brand	ATI
Product name	Radeon HD 4850
Product code	Radeon HD 4850
Tested by	Maran Verweij
Specifications
Chip codename	RV770
Interface	PCI-Express 2.0 x16
Memory	512 MB
Clock frequency - Core	625 MHz
Clock frequency - Memory	993 MHz
Clock frequency - Shaders	625 MHz
Memory controller	256 bit
Memory type	GDDR3
DirectX version	DirectX 10.1
Vertex Shader version	4.1
Pixel Shader version	4.1
Unified Shaders	800
Extra power connector
Power connector type	PEG6
Chip - Transistor count	956 mln
Chip - Production technology	55 nm
SLI compatible
Crossfire compatible
Integrated H.264 video decoder
Integrated VC-1 video decoder
Maximum power usage (TDP)	110 W
Benchmarks (Windows Vista - Intel Core 2 Extreme QX9650)
3DMark06 - Overall [1280x1024]	12878
S.T.A.L.K.E.R Shadow of Chernobyl [1280x1024]	80.8 fps
S.T.A.L.K.E.R Shadow of Chernobyl [1280x1024 - 4x AA 8x AF]	76.3 fps
S.T.A.L.K.E.R Shadow of Chernobyl [1680x1050]	66.4 fps
S.T.A.L.K.E.R Shadow of Chernobyl [1680x1050 - 4x AA 8x AF]	61.7 fps
S.T.A.L.K.E.R Shadow of Chernobyl [1920x1200]	57.5 fps
S.T.A.L.K.E.R Shadow of Chernobyl [1920x1200 - 4x AA 8x AF]	54 fps
Supreme Commander [1280x1024]	48.2 fps
Supreme Commander [1280x1024 - 4x AA]	49 fps
Supreme Commander [1680x1050]	49.5 fps
Supreme Commander [1680x1050 - 4x AA]	48.6 fps
Supreme Commander [1920x1200]	44.4 fps
Supreme Commander [1920x1200 - 4x AA]	44.3 fps
Call of Juarez [1280x1024]	40.1 fps
Call of Juarez [1280x1024 - 4x AA 8x AF]	27.5 fps
Call of Juarez [1680x1050]	34.3 fps
Call of Juarez [1680x1050 - 4x AA 8x AF]	22.3 fps
Call of Juarez [1920x1200]	30.8 fps
Call of Juarez [1920x1200 - 4x AA 8x AF]	19.0 fps
Crysis - Harbor Assault [1280x1024 - High]	34.1 fps
Crysis - Harbor Assault [1280x1024 - High 4x AA]	28.0 fps
Crysis - Harbor Assault [1680x1050 - High]	27.1 fps
Crysis - Harbor Assault [1680x1050 - High 4x AA]	21.0 fps
Crysis - Harbor Assault [1920x1200 - High ]	22.8 fps
Crysis - Harbor Assault [1920x1200 - High 4x AA]	17.9 fps
Unreal Tournament 3 - Serenity [1280x1024]	79.1 fps
Unreal Tournament 3 - Serenity [1680x1050]	74.4 fps
Unreal Tournament 3 - Serenity [1920x1200]	64.5 fps
World in Conflict [1280x1024 - VH]	56 fps
World in Conflict [1280x1024 - VH 4x AA 16x AF]	40 fps
World in Conflict [1680x1050 - VH]	49 fps
World in Conflict [1680x1050 - VH 4x AA 16x AF]	28 fps
World in Conflict [1920x1200 - VH]	37 fps
World in Conflict [1920x1200 - VH 4x AA 16x AF]	27 fps
3DMark Vantage (Performance)	6805
Benchmarks (Windows Vista - Intel Core 2 Extreme OC @ 4.0 GHz)
3DMark Vantage - Performance	7295
3DMark Vantage - Extreme	2822
Crysis - Harbor Assault [1920x1200 8x AA - High]	14.6 fps
Crysis - Harbor Assault [1920x1200 - Very High]	15.1 fps
Crysis - Harbor Assault [1920x1200 8x AA - Very High]	12.5 fps
Benchmarks (Windows Vista x64 - Intel Core i7 965)
Gebruikte driver versie	Catalyst 9.3
3DMark Vantage	8007
Crysis Warhead [1680x1050 - Very High] - Average	12 fps
Crysis Warhead [1680x1050 - Very High] - Minimum	6 fps
Crysis Warhead [1680x1050 4x AA 16x AF - Very High] - Averag	10 fps
Crysis Warhead [1680x1050 4x AA 16x AF - Very High] - Minimu	6 fps
Crysis Warhead [1920x1200 - Very High] - Average	11 fps
Crysis Warhead [1920x1200 - Very High] - Minimum	6 fps
Crysis Warhead [1920x1200 4x AA 16x AF - Very High] - Averag	8 fps
Crysis Warhead [1920x1200 4x AA 16x AF - Very High] - Minimu	4 fps
FarCry 2 [1680x1050 - High] - Average	55.1 fps
FarCry 2 [1680x1050 - High] - Minimum	42.3 fps
FarCry 2 [1680x1050 4x AA - High] - Average	35.6 fps
FarCry 2 [1680x1050 4x AA - High] - Minimum	25.3 fps
FarCry 2 [1920x1200 - High] - Average	51.6 fps
FarCry 2 [1920x1200 - High] - Minimum	41.8 fps
FarCry 2 [1920x1200 4x AA - High] - Average	33 fps
FarCry 2 [1920x1200 4x AA - High] - Minimum	24 fps
Devil May Cry 4 [1680x1050 - Super High]	95.1 fps
Devil May Cry 4 [1920x1200 - Super High]	84.1 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 - High] - Average	23.8 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 - High] - Minimum	14.4 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 4x AA - High] - Average	9.1 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 4x AA - High] - Minimum	5.9 fps
S.T.A.L.K.E.R. Clear Sky [1920x1200 - High] - Average	23.5 fps
S.T.A.L.K.E.R. Clear Sky [1920x1200 - High] - Minimum	9.4 fps
S.T.A.L.K.E.R. Clear Sky [1920x1200 4x AA - High] - Gemiddel	12.1 fps
S.T.A.L.K.E.R. Clear Sky [1920x1200 4x AA - High] - Minimum	5.7 fps
X3: Terran Conflict [1680x1050 - High] - Average	96.4 fps
X3: Terran Conflict [1680x1050 - High] - Minimum	18 fps
X3: Terran Conflict [1680x1050 4x AA 16x AF - High] - Averag	86.8 fps
X3: Terran Conflict [1680x1050 4x AA 16x AF - High] - Minimu	18 fps
X3: Terran Conflict [1920x1200 - High] - Average	95 fps
X3: Terran Conflict [1920x1200 - High] - Minimum	18 fps
X3: Terran Conflict [1920x1200 4x AA 16x AF - High] - Averag	78.3 fps
X3: Terran Conflict [1920x1200 4x AA 16x AF - High] - Minimu	17 fps
Knights of the Sea [1680x1050 - High] - Average	43.8 fps
Knights of the Sea [1680x1050 - High] - Minimum	30.6 fps
Knights of the Sea [1680x1050 4x AA - High] - Average	3.3 fps
Knights of the Sea [1680x1050 4x AA - High] - Minimum	1.9 fps
Knights of the Sea [1920x1200 - High] - Average	41.8 fps
Knights of the Sea [1920x1200 - High] - Minimum	29.3 fps
Knights of the Sea [1920x1200 4x AA] - Average	2.2 fps
Knights of the Sea [1920x1200 4x AA] - Minimum	0.8 fps
Grand Theft Auto 4 [1680x1050 - High]	58.1 fps
Grand Theft Auto 4 [1920x1200 - High]	35.3 fps
Benchmarks (Windows 7 x64 - Intel Core i7 965)
Gebruikte driver versie	Catalyst 9.9
3DMark Vantage (Performance)	8458
BattleForge [1680x1050 - High] - Gemiddeld	33.1 fps
BattleForge [1680x1050 - High] - Minimaal	7.8 fps
BattleForge [1680x1050 4xAA - High] - Gemiddeld	27.1 fps
BattleForge [1680x1050 4xAA - High] - Minimaal	5.7 fps
BattleForge [1920x1080 - High] - Gemiddeld	29.8 fps
BattleForge [1920x1080 - High] - Minimaal	7.1 fps
BattleForge [1920x1080 4xAA - High] - Gemiddeld	24.7 fps
BattleForge [1920x1080 4xAA - High] - Minimaal	5.3 fps
Far Cry 2 [1680x1050 - Very High] - Gemiddeld	51.10 fps
Far Cry 2 [1680x1050 - Very High] - Minimaal	38.18 fps
Far Cry 2 [1680x1050 4xAA - Very High] - Gemiddeld	31.68 fps
Far Cry 2 [1680x1050 4xAA - Very High] - Minimaal	14.28 fps
Far Cry 2 [1920x1080 - Very High] - Gemiddeld	46.35 fps
Far Cry 2 [1920x1080 - Very High] - Minimaal	34.52 fps
Far Cry 2 [1920x1080 4xAA - Very High] - Gemiddeld	21.30 fps
Far Cry 2 [1920x1080 4xAA - Very High] - Minimaal	11.41 fps
Left 4 Dead [1680x1050 - High] - Gemiddeld	105.51 fps
Left 4 Dead [1680x1050 4xAA - High] - Gemiddeld	76.31 fps
Left 4 Dead [1920x1080 - High] - Gemiddeld	94.39 fps
Left 4 Dead [1920x1080 4xAA - High] - Gemiddeld	67.96 fps
Resident Evil 5 [1680x1050 - High] - Gemiddeld	67.5 fps
Resident Evil 5 [1680x1050 4xAA - High] - Gemiddeld	66.9 fps
Resident Evil 5 [1920x1080 - High] - Gemiddeld	61.5 fps
Resident Evil 5 [1920x1080 4xAA - High] - Gemiddeld	56 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 - Extreme] - Gemiddeld	29 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 - Extreme] - Minimaal	15 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 4xAA - Extreme] - Gemidd	14 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 4xAA - Extreme] - Minima	5 fps
S.T.A.L.K.E.R. Clear Sky [1920x1080 - Extreme] - Gemiddeld	26 fps
S.T.A.L.K.E.R. Clear Sky [1920x1080 - Extreme] - Minimaal	14 fps
S.T.A.L.K.E.R. Clear Sky [1920x1080 4xAA - Extreme] - Gemidd	12 fps
S.T.A.L.K.E.R. Clear Sky [1920x1080 4xAA - Extreme] - Minima	5 fps
Street Fighter 4 [1680x1050 - High] - Gemiddeld	112.73 fps
Street Fighter 4 [1680x1050 4xAA - High] - Gemiddeld	71.33 fps
Street Fighter 4 [1920x1080 - High] - Gemiddeld	103.26 fps
Street Fighter 4 [1920x1080 4xAA - High] - Gemiddeld	64.88 fps
Tom Clancy's HAWX DX9 [1680x1050 - High] - Gemiddeld	122 fps
Tom Clancy's HAWX DX9 [1680x1050 4xAA - High] - Gemiddeld	104 fps
Tom Clancy's HAWX DX9 [1920x1080 - High] - Gemiddeld	111 fps
Tom Clancy's HAWX DX9 [1920x1080 4xAA - High] - Gemiddeld	94 fps
Tom Clancy's HAWX DX10(.1) [1680x1050 - High] - Gemiddeld	58 fps
Tom Clancy's HAWX DX10(.1) [1680x1050 4xAA - High] - Gemidde	48 fps
Tom Clancy's HAWX DX10(.1) [1920x1080 - High] - Gemiddeld	52 fps
Tom Clancy's HAWX DX10(.1) [1920x1080 4xAA - High] - Gemidde	44 fps
Stroomverbruik (systeem) - Idle	145 W
Stroomverbruik (systeem) - Far Cry 2 (max)	246 W
Benchmarks (Windows 7 x64 - Intel Core i5 750)
3DMark Vantage (Performance)	7976
Far Cry 2 [1680x1050 - Very High] - Gemiddeld	49.8 fps
Far Cry 2 [1680x1050 4xAA - Very High] - Gemiddeld	25.7 fps
Far Cry 2 [1920x1080 - Very High] - Gemiddeld	45.1 fps
Far Cry 2 [1920x1080 4xAA - Very High] - Gemiddeld	24.9 fps
Left 4 Dead [1680x1050 - High] - Gemiddeld	102.7 fps
Left 4 Dead [1680x1050 4xAA - High] - Gemiddeld	73.2 fps
Left 4 Dead [1920x1080 - High] - Gemiddeld	92.9 fps
Left 4 Dead [1920x1080 4xAA - High] - Gemiddeld	67.3 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 - Extreme] - Gemiddeld	28.6 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 4xAA - Extreme] - Gemidd	14.3 fps
S.T.A.L.K.E.R. Clear Sky [1920x1080 - Extreme] - Gemiddeld	25.3 fps
S.T.A.L.K.E.R. Clear Sky [1920x1080 4xAA - Extreme] - Gemidd	12.0 fps
Tom Clancy's HAWX [1680x1050 - High] - Gemiddeld	118 fps
Tom Clancy's HAWX [1680x1050 4xAA - High] - Gemiddeld	99 fps
Tom Clancy's HAWX [1920x1080 - High] - Gemiddeld	107 fps
Tom Clancy's HAWX [1920x1080 4xAA - High] - Gemiddeld	91 fps
Benchmarks (Windows 7 x64 - AMD Phenom II X4 955)
3DMark Vantage (Performance)	7731
Far Cry 2 [1680x1050 - Very High] - Gemiddeld	52.5 fps
Far Cry 2 [1680x1050 4xAA - Very High] - Gemiddeld	36.5 fps
Far Cry 2 [1920x1080 - Very High] - Gemiddeld	47.3 fps
Far Cry 2 [1920x1080 4xAA - Very High] - Gemiddeld	28.2 fps
Left 4 Dead [1680x1050 - High] - Gemiddeld	104.9 fps
Left 4 Dead [1680x1050 4xAA - High] - Gemiddeld	76.4 fps
Left 4 Dead [1920x1080 - High] - Gemiddeld	93.8 fps
Left 4 Dead [1920x1080 4xAA - High] - Gemiddeld	68.2 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 - Extreme] - Gemiddeld	29.7 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 4xAA - Extreme] - Gemidd	18.7 fps
S.T.A.L.K.E.R. Clear Sky [1920x1080 - Extreme] - Gemiddeld	26.5 fps
S.T.A.L.K.E.R. Clear Sky [1920x1080 4xAA - Extreme] - Gemidd	16.5 fps
Tom Clancy's HAWX [1680x1050 - High] - Gemiddeld	113.0 fps
Tom Clancy's HAWX [1680x1050 4xAA - High] - Gemiddeld	101.0 fps
Tom Clancy's HAWX [1920x1080 - High] - Gemiddeld	107.0 fps
Tom Clancy's HAWX [1920x1080 4xAA - High] - Gemiddeld	95.0 fps
Benchmarks (Windows 7 x64 - AMD Athlon II X2 250)
3DMark Vantage (Performance)	6341
Far Cry 2 [1680x1050 - Very High] - Gemiddeld	49.8 fps
Far Cry 2 [1680x1050 4xAA - Very High] - Gemiddeld	34.2 fps
Far Cry 2 [1920x1080 - Very High] - Gemiddeld	46.4 fps
Far Cry 2 [1920x1080 4xAA - Very High] - Gemiddeld	29.3 fps
Left 4 Dead [1680x1050 - High] - Gemiddeld	94.8 fps
Left 4 Dead [1680x1050 4xAA - High] - Gemiddeld	76.7 fps
Left 4 Dead [1920x1080 - High] - Gemiddeld	85.6 fps
Left 4 Dead [1920x1080 4xAA - High] - Gemiddeld	68.3 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 - Extreme] - Gemiddeld	29.0 fps
S.T.A.L.K.E.R. Clear Sky [1680x1050 4xAA - Extreme] - Gemidd	18.6 fps
S.T.A.L.K.E.R. Clear Sky [1920x1080 - Extreme] - Gemiddeld	26.4 fps
S.T.A.L.K.E.R. Clear Sky [1920x1080 4xAA - Extreme] - Gemidd	16.6 fps
Tom Clancy's HAWX [1680x1050 - High] - Gemiddeld	86 fps
Tom Clancy's HAWX [1680x1050 4xAA - High] - Gemiddeld	80 fps
Tom Clancy's HAWX [1920x1080 - High] - Gemiddeld	82 fps
Tom Clancy's HAWX [1920x1080 4xAA - High] - Gemiddeld	74 fps

The specifications displayed on this page have been composed with the utmost care; however Hardware.Info cannot be held responsible for omissions or errors which may incidentally occur in the provided data, nor can any rights be derived from the information displayed on this page. Hardware.Info advises you to always verify the specifications directly with the manufacturer and/or supplier before purchase.

External news
ATI Radeon HD 5770 vs 4850 Compared in 4 Game Benchmarks	Madshrimps
Germans get ATI HD Radeon 4850 at 96 from Sapphire	Madshrimps
ATI Radeon HD 4850 Offered As Low As $89.99	Madshrimps
ATI Radeon HD 4870 and Radeon HD 4850 Price Cuts This Week	techPowerUp!
Sapphire's ATI Radeon HD 4850 X2 2GB graphics card	Madshrimps
ATI Radeon HD 4850 X2 vs. Nvidia GeForce GTX 280	Madshrimps
ATI Catalyst 8.12 Hotfix Released - Corrects Radeon HD 4850 CrossFire X Mode in Vista	techPowerUp!
IN BRIEF: ATI Radeon HD 4850 Becomes The Most Popular Graphics Card in the U.S. Retail	Xbit Labs
Sapphire ATI Radeon HD 4850 X2 1GB GDDR3 Scores	techPowerUp!
Sapphire ATI Radeon HD 4850 X2 2GB GDDR3 Card Pictured	techPowerUp!
Palit ATI Radeon HD 4850	Madshrimps
13 VGA Coolers Tested on ATI HD Radeon 4850	Madshrimps
[M] ATI HD Radeon 4850 vs NVIDIA Geforce 9800 GTX	Madshrimps
Sapphire ATI Radeon HD 4850	Madshrimps
Sapphire ATI Radeon HD 4850 TOXIC	Madshrimps
AMD doubles up, announces ATI HD Radeon 4850 X2 and 4870 X2	Engadget
ATI Radeon HD 4850 and 4870: Gaming Performance Review	Madshrimps
ATI Radeon HD 4850 Fan Speed Workaround Posted	techPowerUp!
ATI Radeon HD 4870/4850 Performance Preview	FiringSquad
ATI Radeon HD 4850 and 4870 reviewed: all that and a bag of RV770 chips	Engadget
ATI Radeon HD 4850 and 4870: RV770 Has Arrived @ HotHardware.com	Madshrimps
ATI Radeon HD 4850 and 4870: RV770 Has Arrived	Madshrimps
AMD (ATI) Radeon HD 4850 and 4870: bloodying NVIDIA's profits	HEXUS.net
Asustek and GeCube launch ATI Radeon HD 4850-based graphics cards	DigiTimes
Asustek and GeCube launch ATI Radeon HD 4850-based graphics cards	TG Daily
ATI Hotfix for Radeon HD 4850/4870 Video Cards	Guru3d
(PR) ASUS Launches World's First ATI Radeon HD 4850 with 1GB Onboard Memory	techPowerUp!
ATI launch Radeon HD 4850 and HD 4870	Beyond3D
ATI Radeon HD 4850 - benchmarked against mid-range and high-end GPUs	HEXUS.net
ATI Hotfix for Radeon HD 4850/4870 Video Cards Released	techPowerUp!
ATI Radeon HD 4850 gets official: available immediately	Engadget
First ATI Radeon HD 4850 reviews surface	TG Daily
ATI Radeon HD 4850 exposed: we take a first look	HEXUS.net
ATI Radeon HD 4850 Preview	Madshrimps
Early Biostar P45 Motherboard and Radeon HD 4850 Information from Computex	DailyTech
ATI Radeon HD 4850 GDDR3 Graphics Card Pictured in Taiwan - RV770	Legit Reviews
AMD Starts Shipping ATI Radeon HD 4850 Video Cards	techPowerUp!
First ATI Radeon HD 4870 and HD 4850 Pictures Emerge	techPowerUp!

External reviews
Sapphire ATI Radeon HD 4850 X2 2GB	Bit-tech.net
RV770: ATI Radeon HD 4850 & 4870 analysis	Bit-tech.net
Sapphire ATI Radeon HD 4850 TOXIC	Bit-tech.net
ATI Radeon HD 4870/4850 Performance Preview	FiringSquad
Scaling New Heights - ATI Radeon HD 4850 512MB GDDR3	HardwareZone
ATI Radeon HD 4850: Smarter by Design?	Tom's Hardware
ATI Radeon HD 4850: Smarter by Design?	Tom's Hardware
ATI Radeon HD 4850 Preview: AMD Delivers Performance for the Masses	AnandTech
ATI Radeon HD 4850 Versus NVIDIA GeForce 9800 GTX+	Legit Reviews
AMD ATI Radeon HD 4850 Crossfire Force 3D & PowerColor	Guru3d
ATI Radeon HD 4850 Single and CrossFire Mode Review	AMDZone