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GeForce GTX 260 vs Radeon HD 4890 1GB

Intro

The GeForce GTX 260 comes with a core clock frequency of 576 MHz and a GDDR3 memory frequency of 999 MHz. It also uses a 448-bit memory bus, and makes use of a 65 nm design. It features 192 SPUs, 64 Texture Address Units, and 28 Raster Operation Units.

Compare those specifications to the Radeon HD 4890 1GB, which has clock speeds of 1000 MHz on the GPU, and 975 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Avatar

Settings: Ultra High Quality
AA: 8x
AF: none
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4890 1GB 36 FPS
GeForce GTX 260 32 FPS
Difference: 4 FPS (13%)

Battlefield Bad Company 2

Settings: High Quality
AA: 4x
AF: 8x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4890 1GB 36 FPS
GeForce GTX 260 31 FPS
Difference: 5 FPS (16%)

Crysis

Settings: High Detail
AA: 4x
AF: none
Resolution: 1680x1050
Test Machine: Intel Core i5-750,Windows 7 Ultimate x64,3 x 2GB (Source)
Radeon HD 4890 1GB 42 FPS
GeForce GTX 260 34 FPS
Difference: 8 FPS (24%)

F.E.A.R. 2

Settings: Maximum Quality
AA: 4x
AF: 8x
Resolution: 1920x1200
Test Machine: Unknown (Source)
Radeon HD 4890 1GB 88 FPS
GeForce GTX 260 60 FPS
Difference: 28 FPS (47%)

Fallout 3

Settings: Very High Quality
AA: 4x
AF: 8x
Resolution: 1680x1050
Test Machine: Tom's Hardware Charts Test Rig (Source)
Radeon HD 4890 1GB 80 FPS
GeForce GTX 260 74 FPS
Difference: 6 FPS (8%)

Far Cry 2

Settings: Very High Qualty
AA: none
AF: none
Resolution: 1920x1200
Test Machine: Intel Core i7-920,3 x 2 GB Ram,Windows Vista Ultimate 32 Bit SP1 (Source)
Radeon HD 4890 1GB 69 FPS
GeForce GTX 260 53 FPS
Difference: 16 FPS (30%)

Left4Dead

Settings: Very High Quality
AA: 4x
AF: 8x
Resolution: 1920x1200
Test Machine: Tom's Hardware Charts Test Rig (Source)
Radeon HD 4890 1GB 87 FPS
GeForce GTX 260 74 FPS
Difference: 13 FPS (18%)

Left4Dead 2

Settings: Very High
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4890 1GB 88 FPS
GeForce GTX 260 69 FPS
Difference: 19 FPS (28%)

Mass Effect 2

Settings: Maximum Quality
AA: none
AF: 8x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4890 1GB 107 FPS
GeForce GTX 260 91 FPS
Difference: 16 FPS (18%)

Supreme Commander 2

Settings: High
AA: 8x
AF: 16x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4890 1GB 64 FPS
GeForce GTX 260 34 FPS
Difference: 30 FPS (88%)

Tom Clancy's Endwar

Settings: High Quality
AA: 4x
AF: 8x
Resolution: 1920x1200
Test Machine: Tom's Hardware Test Machine (Source)
Radeon HD 4890 1GB 30 FPS
GeForce GTX 260 24 FPS
Difference: 6 FPS (25%)

Tom Clancy's H.A.W.X

Settings: High Quality
AA: 4x
AF: 8x
Resolution: 1680x1050
Test Machine: Tom's Hardware Charts Test Rig (Source)
GeForce GTX 260 47 FPS
Radeon HD 4890 1GB 41 FPS
Difference: 6 FPS (15%)

Radeon HD 4890 1GB wins

(Based entirely on the benchmarks listed above)

When combining all game benchmark scores on this page together, the Radeon HD 4890 1GB wins overall, by 145 FPS. Please note that we do not have the results of every benchmark ever done for these cards, so the results may differ wildly in different games.

Radeon HD 4890 1GB 768 FPS
GeForce GTX 260 623 FPS
Difference: 145 FPS (23%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 260 182 Watts
Radeon HD 4890 1GB 190 Watts
Difference: 8 Watts (4%)

Memory Bandwidth

Performance-wise, the Radeon HD 4890 1GB should in theory be just a bit superior to the GeForce GTX 260 in general. (explain)

Radeon HD 4890 1GB 124800 MB/sec
GeForce GTX 260 111888 MB/sec
Difference: 12912 (12%)

Texel Rate

The Radeon HD 4890 1GB will be a little bit (about 9%) more effective at texture filtering than the GeForce GTX 260. (explain)

Radeon HD 4890 1GB 40000 Mtexels/sec
GeForce GTX 260 36864 Mtexels/sec
Difference: 3136 (9%)

Pixel Rate

The GeForce GTX 260 will be a bit (about 1%) better at anti-aliasing than the Radeon HD 4890 1GB, and will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 260 16128 Mpixels/sec
Radeon HD 4890 1GB 16000 Mpixels/sec
Difference: 128 (1%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

GeForce GTX 260

Amazon.com

Radeon HD 4890 1GB

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Model GeForce GTX 260 Radeon HD 4890 1GB
Manufacturer nVidia AMD
Year June 16, 2008 Apr 2, 2009
Code Name G200 RV790 XT
Fab Process 65 nm 55 nm
Bus PCIe x16 2.0 PCIe 2.0 x16
Memory 896 MB 1024 MB
Core Speed 576 MHz 1000 MHz
Shader Speed 1242 MHz (N/A) MHz
Memory Speed 999 MHz (1998 MHz effective) 975 MHz (3900 MHz effective)
Unified Shaders 192 800(160x5)
Texture Mapping Units 64 40
Render Output Units 28 16
Bus Type GDDR3 GDDR5
Bus Width 448-bit 256-bit
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.1 OpenGL 3.0
Power (Max TDP) 182 watts 190 watts
Shader Model 4.0 4.1
Bandwidth 111888 MB/sec 124800 MB/sec
Texel Rate 36864 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 16000 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

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