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

Intro

The GeForce GTX 260 Core 216 makes use of a 65 nm design. nVidia has clocked the core speed at 576 MHz. The GDDR3 RAM works at a speed of 999 MHz on this particular card. It features 216 SPUs as well as 72 Texture Address Units and 28 ROPs.

Compare those specs to the Radeon HD 4850 X2 512MB, which comes with clock speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 memory. 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)

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 small bit faster than the GeForce GTX 260 Core 216 overall. (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 should be a lot (approximately 21%) better at texture filtering 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

If using a high screen resolution is important to you, then the Radeon HD 4850 X2 512MB is superior to the GeForce GTX 260 Core 216, by a large margin. (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

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Radeon HD 4850 X2 512MB

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 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 (measured in MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines 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 rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum 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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