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GeForce GTX 260 vs Radeon HD 4870 512MB

Intro

The GeForce GTX 260 uses a 65 nm design. nVidia has set the core speed at 576 MHz. The GDDR3 RAM works at a frequency of 999 MHz on this particular card. It features 192 SPUs along with 64 TAUs and 28 ROPs.

Compare those specs to the Radeon HD 4870 512MB, which has GPU clock speed of 750 MHz, and 512 MB of GDDR5 memory set to run at 900 MHz through a 256-bit bus. It also is comprised of 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 512MB 150 Watts
GeForce GTX 260 182 Watts
Difference: 32 Watts (21%)

Memory Bandwidth

Theoretically, the Radeon HD 4870 512MB should perform a small bit faster than the GeForce GTX 260 overall. (explain)

Radeon HD 4870 512MB 115200 MB/sec
GeForce GTX 260 111888 MB/sec
Difference: 3312 (3%)

Texel Rate

The GeForce GTX 260 is quite a bit (approximately 23%) faster with regards to texture filtering than the Radeon HD 4870 512MB. (explain)

GeForce GTX 260 36864 Mtexels/sec
Radeon HD 4870 512MB 30000 Mtexels/sec
Difference: 6864 (23%)

Pixel Rate

The GeForce GTX 260 should be much (approximately 34%) better at anti-aliasing than the Radeon HD 4870 512MB, and capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 260 16128 Mpixels/sec
Radeon HD 4870 512MB 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

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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 Radeon HD 4870 512MB
Manufacturer nVidia AMD
Year June 16, 2008 Jun 25, 2008
Code Name G200 RV770 XT
Memory 896 MB 512 MB
Core Speed 576 MHz 750 MHz
Memory Speed 1998 MHz 3600 MHz
Power (Max TDP) 182 watts 150 watts
Bandwidth 111888 MB/sec 115200 MB/sec
Texel Rate 36864 Mtexels/sec 30000 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 12000 Mpixels/sec
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
Fab Process 65 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 data (in units of megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 260

Amazon.com

Check prices at:

Radeon HD 4870 512MB

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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