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GeForce GTX 295 vs Radeon HD 6870

Intro

The GeForce GTX 295 has clock speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 memory. It features 240 SPUs along with 80 TAUs and 28 ROPs.

Compare those specifications to the Radeon HD 6870, which features core clock speeds of 900 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 1120 SPUs along with 56 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6870 151 Watts
GeForce GTX 295 289 Watts
Difference: 138 Watts (91%)

Memory Bandwidth

Performance-wise, the GeForce GTX 295 should theoretically be a lot better than the Radeon HD 6870 in general. (explain)

GeForce GTX 295 223776 MB/sec
Radeon HD 6870 134400 MB/sec
Difference: 89376 (67%)

Texel Rate

The GeForce GTX 295 will be much (approximately 83%) faster with regards to anisotropic filtering than the Radeon HD 6870. (explain)

GeForce GTX 295 92160 Mtexels/sec
Radeon HD 6870 50400 Mtexels/sec
Difference: 41760 (83%)

Pixel Rate

The GeForce GTX 295 is a small bit (more or less 12%) faster with regards to full screen anti-aliasing than the Radeon HD 6870, and also will be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 295 32256 Mpixels/sec
Radeon HD 6870 28800 Mpixels/sec
Difference: 3456 (12%)

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 6870

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 6870
Manufacturer nVidia AMD
Year January 8, 2009 October 2010
Code Name G200b Barts XT
Memory 896 MB (x2) 1024 MB
Core Speed 576 MHz (x2) 900 MHz
Memory Speed 1998 MHz (x2) 4200 MHz
Power (Max TDP) 289 watts 151 watts
Bandwidth 223776 MB/sec 134400 MB/sec
Texel Rate 92160 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 32256 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 240 (x2) 1120
Texture Mapping Units 80 (x2) 56
Render Output Units 28 (x2) 32
Bus Type GDDR3 GDDR5
Bus Width 448-bit (x2) 256-bit
Fab Process 55 nm 40 nm
Transistors 1400 million 1700 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (measured in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock 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, especially 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 6870

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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