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GeForce GTX 295 vs Radeon HD 7950 3GB

Intro

The GeForce GTX 295 features a GPU core clock speed of 576 MHz, and the 896 MB of GDDR3 memory is set to run at 999 MHz through a 448-bit bus. It also is made up of 240 Stream Processors, 80 TAUs, and 28 Raster Operation Units.

Compare those specs to the Radeon HD 7950 3GB, which has core speeds of 800 MHz on the GPU, and 1250 MHz on the 3072 MB of GDDR5 RAM. It features 1792 SPUs along with 112 TAUs and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7950 3GB 200 Watts
GeForce GTX 295 289 Watts
Difference: 89 Watts (45%)

Memory Bandwidth

Performance-wise, the Radeon HD 7950 3GB should in theory be a little bit superior to the GeForce GTX 295 in general. (explain)

Radeon HD 7950 3GB 240000 MB/sec
GeForce GTX 295 223776 MB/sec
Difference: 16224 (7%)

Texel Rate

The GeForce GTX 295 should be a small bit (about 3%) faster with regards to AF than the Radeon HD 7950 3GB. (explain)

GeForce GTX 295 92160 Mtexels/sec
Radeon HD 7950 3GB 89600 Mtexels/sec
Difference: 2560 (3%)

Pixel Rate

The GeForce GTX 295 should be quite a bit (more or less 26%) more effective at AA than the Radeon HD 7950 3GB, and also able to handle higher resolutions while still performing well. (explain)

GeForce GTX 295 32256 Mpixels/sec
Radeon HD 7950 3GB 25600 Mpixels/sec
Difference: 6656 (26%)

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

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Radeon HD 7950 3GB

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 295 Radeon HD 7950 3GB
Manufacturer nVidia AMD
Year January 8, 2009 January 2012
Code Name G200b Tahiti Pro
Memory 896 MB (x2) 3072 MB
Core Speed 576 MHz (x2) 800 MHz
Memory Speed 1998 MHz (x2) 5000 MHz
Power (Max TDP) 289 watts 200 watts
Bandwidth 223776 MB/sec 240000 MB/sec
Texel Rate 92160 Mtexels/sec 89600 Mtexels/sec
Pixel Rate 32256 Mpixels/sec 25600 Mpixels/sec
Unified Shaders 240 (x2) 1792
Texture Mapping Units 80 (x2) 112
Render Output Units 28 (x2) 32
Bus Type GDDR3 GDDR5
Bus Width 448-bit (x2) 384-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 4.2

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 per second. This figure is calculated by multiplying the total 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 in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTX 295

Amazon.com

Check prices at:

Radeon HD 7950 3GB

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.

Comments

One Response to “GeForce GTX 295 vs Radeon HD 7950 3GB”
Pandore says:

Pas facile de voir la différence , mais avec l'OC de la 7950 elle devient rapidement supérieur a la 295 encore une fois limité ( direct X 10 )

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