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GeForce GTX 260 216SP 55 nm vs Radeon HD 4890 2GB

Intro

The GeForce GTX 260 216SP 55 nm features a clock frequency of 576 MHz and a GDDR3 memory frequency of 999 MHz. It also makes use of a 448-bit memory bus, and uses a 55 nm design. It is comprised of 216 SPUs, 72 TAUs, and 28 ROPs.

Compare that to the Radeon HD 4890 2GB, which comes with GPU clock speed of 1000 MHz, and 2048 MB of GDDR5 memory set to run at 975 MHz through a 256-bit bus. It also features 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 260 216SP 55 nm 171 Watts
Radeon HD 4890 2GB 190 Watts
Difference: 19 Watts (11%)

Memory Bandwidth

In theory, the Radeon HD 4890 2GB should be 12% quicker than the GeForce GTX 260 216SP 55 nm in general, due to its higher bandwidth. (explain)

Radeon HD 4890 2GB 124800 MB/sec
GeForce GTX 260 216SP 55 nm 111888 MB/sec
Difference: 12912 (12%)

Texel Rate

The GeForce GTX 260 216SP 55 nm is a little bit (about 4%) better at AF than the Radeon HD 4890 2GB. (explain)

GeForce GTX 260 216SP 55 nm 41472 Mtexels/sec
Radeon HD 4890 2GB 40000 Mtexels/sec
Difference: 1472 (4%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 260 216SP 55 nm is the winner, not by a very large margin though. (explain)

GeForce GTX 260 216SP 55 nm 16128 Mpixels/sec
Radeon HD 4890 2GB 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

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GeForce GTX 260 216SP 55 nm

Amazon.com

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Radeon HD 4890 2GB

Amazon.com

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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

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Model GeForce GTX 260 216SP 55 nm Radeon HD 4890 2GB
Manufacturer nVidia AMD
Year December 22, 2008 Apr 2, 2009
Code Name G200b RV790 XT
Memory 896 MB 2048 MB
Core Speed 576 MHz 1000 MHz
Memory Speed 1998 MHz 3900 MHz
Power (Max TDP) 171 watts 190 watts
Bandwidth 111888 MB/sec 124800 MB/sec
Texel Rate 41472 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 216 800(160x5)
Texture Mapping Units 72 40
Render Output Units 28 16
Bus Type GDDR3 GDDR5
Bus Width 448-bit 256-bit
Fab Process 55 nm 55 nm
Transistors 1400 million 959 million
Bus PCIe x16 2.0 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units 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 output rate also depends on lots of 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.

Display Prices

Hide Prices

GeForce GTX 260 216SP 55 nm

Amazon.com

Check prices at:

Radeon HD 4890 2GB

Amazon.com

Check prices at:

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.

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