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GeForce GTX 260 Core 216 vs Radeon HD 4850 X2 512MB

Intro

The GeForce GTX 260 Core 216 features a GPU core clock speed of 576 MHz, and the 896 MB of GDDR3 RAM is set to run at 999 MHz through a 448-bit bus. It also features 216 SPUs, 72 Texture Address Units, and 28 Raster Operation Units.

Compare those specifications to the Radeon HD 4850 X2 512MB, which has GPU core speed of 625 MHz, and 512 MB of GDDR3 RAM set to run at 993 MHz through a 256-bit bus. It also features 800(160x5) SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 260 Core 216 202 Watts
Radeon HD 4850 X2 512MB 250 Watts
Difference: 48 Watts (24%)

Memory Bandwidth

In theory, the Radeon HD 4850 X2 512MB should be a bit faster than the GeForce GTX 260 Core 216 in general. (explain)

Radeon HD 4850 X2 512MB 127104 MB/sec
GeForce GTX 260 Core 216 111888 MB/sec
Difference: 15216 (14%)

Texel Rate

The Radeon HD 4850 X2 512MB is much (about 21%) faster with regards to AF than the GeForce GTX 260 Core 216. (explain)

Radeon HD 4850 X2 512MB 50000 Mtexels/sec
GeForce GTX 260 Core 216 41472 Mtexels/sec
Difference: 8528 (21%)

Pixel Rate

The Radeon HD 4850 X2 512MB should be quite a bit (more or less 24%) faster with regards to anti-aliasing than the GeForce GTX 260 Core 216, and will be capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 4850 X2 512MB 20000 Mpixels/sec
GeForce GTX 260 Core 216 16128 Mpixels/sec
Difference: 3872 (24%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GTX 260 Core 216

Amazon.com

Check prices at:

Radeon HD 4850 X2 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

Display Specifications

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Model GeForce GTX 260 Core 216 Radeon HD 4850 X2 512MB
Manufacturer nVidia AMD
Year September 16, 2008 Nov 7, 2008
Code Name G200 R700
Memory 896 MB 512 MB (x2)
Core Speed 576 MHz 625 MHz (x2)
Memory Speed 1998 MHz 1986 MHz (x2)
Power (Max TDP) 202 watts 250 watts
Bandwidth 111888 MB/sec 127104 MB/sec
Texel Rate 41472 Mtexels/sec 50000 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 20000 Mpixels/sec
Unified Shaders 216 800(160x5) (x2)
Texture Mapping Units 72 40 (x2)
Render Output Units 28 16 (x2)
Bus Type GDDR3 GDDR3
Bus Width 448-bit 256-bit (x2)
Fab Process 65 nm 55 nm
Transistors 1400 million 956 million
Bus PCIe x16 2.0 PCIe 2.0 x16 (PCIe bridge)
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 moved across the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better 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 applied in one second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the 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 graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output 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 potential 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 4850 X2 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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