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GeForce GTX 295 vs Radeon R9 270

Intro

The GeForce GTX 295 uses a 55 nm design. nVidia has clocked the core speed at 576 MHz. The GDDR3 memory runs at a speed of 999 MHz on this specific card. It features 240 SPUs as well as 80 Texture Address Units and 28 ROPs.

Compare those specs to the Radeon R9 270, which has GPU clock speed of 900 MHz, and 2048 MB of GDDR5 memory set to run at 1400 MHz through a 256-bit bus. It also is made up of 1280 SPUs, 80 TAUs, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270 150 Watts
GeForce GTX 295 289 Watts
Difference: 139 Watts (93%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 295 should theoretically be quite a bit better than the Radeon R9 270 in general. (explain)

GeForce GTX 295 223776 MB/sec
Radeon R9 270 179200 MB/sec
Difference: 44576 (25%)

Texel Rate

The GeForce GTX 295 is a lot (more or less 28%) faster with regards to anisotropic filtering than the Radeon R9 270. (explain)

GeForce GTX 295 92160 Mtexels/sec
Radeon R9 270 72000 Mtexels/sec
Difference: 20160 (28%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 295 is the winner, not by a very large margin though. (explain)

GeForce GTX 295 32256 Mpixels/sec
Radeon R9 270 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 R9 270

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 R9 270
Manufacturer nVidia AMD
Year January 8, 2009 November 2013
Code Name G200b Curacao Pro
Memory 896 MB (x2) 2048 MB
Core Speed 576 MHz (x2) 900 MHz
Memory Speed 1998 MHz (x2) 5600 MHz
Power (Max TDP) 289 watts 150 watts
Bandwidth 223776 MB/sec 179200 MB/sec
Texel Rate 92160 Mtexels/sec 72000 Mtexels/sec
Pixel Rate 32256 Mpixels/sec 28800 Mpixels/sec
Unified Shaders 240 (x2) 1280
Texture Mapping Units 80 (x2) 80
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 2800 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.2
OpenGL Version OpenGL 3.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, 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 graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTX 295

Amazon.com

Check prices at:

Radeon R9 270

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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