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GeForce GTX 295 vs Geforce GTX 680

Intro

The GeForce GTX 295 has a GPU core clock speed of 576 MHz, and the 896 MB of GDDR3 RAM 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 Geforce GTX 680, which has a core clock speed of 1006 MHz and a GDDR5 memory frequency of 1502 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It features 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 680 195 Watts
GeForce GTX 295 289 Watts
Difference: 94 Watts (48%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 295 should be 16% faster than the Geforce GTX 680 overall, due to its greater bandwidth. (explain)

GeForce GTX 295 223776 MB/sec
Geforce GTX 680 192256 MB/sec
Difference: 31520 (16%)

Texel Rate

The Geforce GTX 680 is a lot (about 40%) better at anisotropic filtering than the GeForce GTX 295. (explain)

Geforce GTX 680 128768 Mtexels/sec
GeForce GTX 295 92160 Mtexels/sec
Difference: 36608 (40%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 295 is superior to the Geforce GTX 680, but it probably won't make a huge difference. (explain)

GeForce GTX 295 32256 Mpixels/sec
Geforce GTX 680 32192 Mpixels/sec
Difference: 64 (0%)

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

Geforce GTX 680

Amazon.com

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 Geforce GTX 680
Manufacturer nVidia nVidia
Year January 8, 2009 March 2012
Code Name G200b GK104
Memory 896 MB (x2) 2048 MB
Core Speed 576 MHz (x2) 1006 MHz
Memory Speed 1998 MHz (x2) 6008 MHz
Power (Max TDP) 289 watts 195 watts
Bandwidth 223776 MB/sec 192256 MB/sec
Texel Rate 92160 Mtexels/sec 128768 Mtexels/sec
Pixel Rate 32256 Mpixels/sec 32192 Mpixels/sec
Unified Shaders 240 (x2) 1536
Texture Mapping Units 80 (x2) 128
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 3540 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.1 OpenGL 4.2

Memory Bandwidth: Bandwidth is the maximum amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, 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 video card could 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 Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Comments

6 Responses to “GeForce GTX 295 vs Geforce GTX 680”
SpArTaN says:

Damn xD A GTX295 beats a GTX680

derp says:

No it doesn't - this theoretical chart doesn't take internal SLI scaling efficiency of 295 in to account. In real world, 680 wipes the floor off 295.

Cumshotfake says:

The GTX 295 still performs impressively with current games, if you are ok with DX 10.
Also it comes quite close to the GTX 680's general performance in high resolutions. But keep in mind, that a 680 is a single graphic chip, that needs less power and has the overall way better performance than an older GTX 295.

ggyyggygygygyyggyyg says:

WTF?
Theoretical BS.

here is realworld results:
http://www.evga.com/forums/tm.aspx?m=1519228

SilenceMan says:

Lol GTX 295 comes neck to neck with GTX 680...if someone doesn't"t have problem with Dx10 he can sli them and easily in 3D programs beats all GPUs except GTX 690....

in general until 2015-2016 would be really good....then you will be able to buy from series : 9xx and 10xx...

Matt says:

It took a while but you can now 3-way two 295's and dedicate the last half to Phys-X.

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