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GeForce GTX 260 Core 216 vs Radeon HD 4870 1GB

Intro

The GeForce GTX 260 Core 216 has a core clock frequency of 576 MHz and a GDDR3 memory frequency of 999 MHz. It also features a 448-bit memory bus, and makes use of a 65 nm design. It is comprised of 216 SPUs, 72 Texture Address Units, and 28 Raster Operation Units.

Compare all of that to the Radeon HD 4870 1GB, which has a clock speed of 750 MHz and a GDDR5 memory speed of 900 MHz. It also uses a 256-bit bus, and uses a 55 nm design. It features 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 1GB 150 Watts
GeForce GTX 260 Core 216 202 Watts
Difference: 52 Watts (35%)

Memory Bandwidth

In theory, the Radeon HD 4870 1GB should be 3% faster than the GeForce GTX 260 Core 216 in general, because of its higher bandwidth. (explain)

Radeon HD 4870 1GB 115200 MB/sec
GeForce GTX 260 Core 216 111888 MB/sec
Difference: 3312 (3%)

Texel Rate

The GeForce GTX 260 Core 216 will be quite a bit (about 38%) faster with regards to AF than the Radeon HD 4870 1GB. (explain)

GeForce GTX 260 Core 216 41472 Mtexels/sec
Radeon HD 4870 1GB 30000 Mtexels/sec
Difference: 11472 (38%)

Pixel Rate

The GeForce GTX 260 Core 216 should be quite a bit (about 34%) faster with regards to FSAA than the Radeon HD 4870 1GB, and also should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 260 Core 216 16128 Mpixels/sec
Radeon HD 4870 1GB 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 Core 216

Amazon.com

Check prices at:

Radeon HD 4870 1GB

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 Core 216 Radeon HD 4870 1GB
Manufacturer nVidia AMD
Year September 16, 2008 Jun 25, 2008
Code Name G200 RV770 XT
Memory 896 MB 1024 MB
Core Speed 576 MHz 750 MHz
Memory Speed 1998 MHz 3600 MHz
Power (Max TDP) 202 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 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: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be moved across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce GTX 260 Core 216

Amazon.com

Check prices at:

Radeon HD 4870 1GB

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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