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GeForce GTX 295 vs Radeon HD 7870 XT

Intro

The GeForce GTX 295 comes with a core clock speed of 576 MHz and a GDDR3 memory frequency of 999 MHz. It also features a 448-bit memory bus, and uses a 55 nm design. It is made up of 240 SPUs, 80 Texture Address Units, and 28 ROPs.

Compare those specifications to the Radeon HD 7870 XT, which has a clock speed of 925 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 96 TAUs, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7870 XT 185 Watts
GeForce GTX 295 289 Watts
Difference: 104 Watts (56%)

Memory Bandwidth

In theory, the GeForce GTX 295 will be 17% quicker than the Radeon HD 7870 XT in general, due to its greater bandwidth. (explain)

GeForce GTX 295 223776 MB/sec
Radeon HD 7870 XT 192000 MB/sec
Difference: 31776 (17%)

Texel Rate

The GeForce GTX 295 is a little bit (about 4%) faster with regards to anisotropic filtering than the Radeon HD 7870 XT. (explain)

GeForce GTX 295 92160 Mtexels/sec
Radeon HD 7870 XT 88800 Mtexels/sec
Difference: 3360 (4%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 295 is the winner, but it probably won't make a huge difference. (explain)

GeForce GTX 295 32256 Mpixels/sec
Radeon HD 7870 XT 29600 Mpixels/sec
Difference: 2656 (9%)

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 295

Amazon.com

Check prices at:

Radeon HD 7870 XT

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 295 Radeon HD 7870 XT
Manufacturer nVidia AMD
Year January 8, 2009 November 2012
Code Name G200b Tahiti LE
Memory 896 MB (x2) 2048 MB
Core Speed 576 MHz (x2) 925 MHz
Memory Speed 1998 MHz (x2) 6000 MHz
Power (Max TDP) 289 watts 185 watts
Bandwidth 223776 MB/sec 192000 MB/sec
Texel Rate 92160 Mtexels/sec 88800 Mtexels/sec
Pixel Rate 32256 Mpixels/sec 29600 Mpixels/sec
Unified Shaders 240 (x2) 1536
Texture Mapping Units 80 (x2) 96
Render Output Units 28 (x2) 32
Bus Type GDDR3 GDDR5
Bus Width 448-bit (x2) 256-bit
Fab Process 55 nm 28 nm
Transistors 1400 million 4313 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.1
OpenGL Version OpenGL 3.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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

Display Prices

Hide Prices

GeForce GTX 295

Amazon.com

Check prices at:

Radeon HD 7870 XT

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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