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GeForce GTX 260 216SP 55 nm vs Radeon HD 4870 2GB

Intro

The GeForce GTX 260 216SP 55 nm features core clock speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 RAM. It features 216 SPUs along with 72 Texture Address Units and 28 ROPs.

Compare those specs to the Radeon HD 4870 2GB, which has core clock speeds of 750 MHz on the GPU, and 900 MHz on the 2048 MB of GDDR5 RAM. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 2GB 150 Watts
GeForce GTX 260 216SP 55 nm 171 Watts
Difference: 21 Watts (14%)

Memory Bandwidth

Performance-wise, the Radeon HD 4870 2GB should in theory be a bit better than the GeForce GTX 260 216SP 55 nm overall. (explain)

Radeon HD 4870 2GB 115200 MB/sec
GeForce GTX 260 216SP 55 nm 111888 MB/sec
Difference: 3312 (3%)

Texel Rate

The GeForce GTX 260 216SP 55 nm should be quite a bit (more or less 38%) more effective at texture filtering than the Radeon HD 4870 2GB. (explain)

GeForce GTX 260 216SP 55 nm 41472 Mtexels/sec
Radeon HD 4870 2GB 30000 Mtexels/sec
Difference: 11472 (38%)

Pixel Rate

The GeForce GTX 260 216SP 55 nm will be much (approximately 34%) faster with regards to FSAA than the Radeon HD 4870 2GB, and also able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 260 216SP 55 nm 16128 Mpixels/sec
Radeon HD 4870 2GB 12000 Mpixels/sec
Difference: 4128 (34%)

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

Check prices at:

Radeon HD 4870 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.

Specifications

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Model GeForce GTX 260 216SP 55 nm Radeon HD 4870 2GB
Manufacturer nVidia AMD
Year December 22, 2008 Jun 25, 2008
Code Name G200b RV770 XT
Memory 896 MB 2048 MB
Core Speed 576 MHz 750 MHz
Memory Speed 1998 MHz 3600 MHz
Power (Max TDP) 171 watts 150 watts
Bandwidth 111888 MB/sec 115200 MB/sec
Texel Rate 41472 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 12000 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 956 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 over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, 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 number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics 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 the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 260 216SP 55 nm

Amazon.com

Check prices at:

Radeon HD 4870 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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