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GeForce GTX 295 vs Radeon HD 6790

Intro

The GeForce GTX 295 makes use of a 55 nm design. nVidia has set the core frequency at 576 MHz. The GDDR3 memory runs at a frequency of 999 MHz on this particular model. It features 240 SPUs along with 80 TAUs and 28 Rasterization Operator Units.

Compare those specifications to the Radeon HD 6790, which makes use of a 40 nm design. AMD has set the core frequency at 840 MHz. The GDDR5 RAM is set to run at a frequency of 1050 MHz on this specific model. It features 800 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6790 150 Watts
GeForce GTX 295 289 Watts
Difference: 139 Watts (93%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 295 is 67% faster than the Radeon HD 6790 overall, because of its higher data rate. (explain)

GeForce GTX 295 223776 MB/sec
Radeon HD 6790 134400 MB/sec
Difference: 89376 (67%)

Texel Rate

The GeForce GTX 295 will be a lot (approximately 174%) better at AF than the Radeon HD 6790. (explain)

GeForce GTX 295 92160 Mtexels/sec
Radeon HD 6790 33600 Mtexels/sec
Difference: 58560 (174%)

Pixel Rate

The GeForce GTX 295 will be a lot (approximately 140%) faster with regards to AA than the Radeon HD 6790, and also should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 295 32256 Mpixels/sec
Radeon HD 6790 13440 Mpixels/sec
Difference: 18816 (140%)

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 6790

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 6790
Manufacturer nVidia AMD
Year January 8, 2009 April 2011
Code Name G200b Barts LE
Memory 896 MB (x2) 1024 MB
Core Speed 576 MHz (x2) 840 MHz
Memory Speed 1998 MHz (x2) 4200 MHz
Power (Max TDP) 289 watts 150 watts
Bandwidth 223776 MB/sec 134400 MB/sec
Texel Rate 92160 Mtexels/sec 33600 Mtexels/sec
Pixel Rate 32256 Mpixels/sec 13440 Mpixels/sec
Unified Shaders 240 (x2) 800
Texture Mapping Units 80 (x2) 40
Render Output Units 28 (x2) 16
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 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics 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 the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 295

Amazon.com

Check prices at:

Radeon HD 6790

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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