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GeForce GTX 660 vs Radeon R9 270X

Intro

The GeForce GTX 660 has a GPU clock speed of 980 MHz, and the 2048 MB of GDDR5 memory is set to run at 1502 MHz through a 192-bit bus. It also is made up of 960 Stream Processors, 80 Texture Address Units, and 24 ROPs.

Compare that to the Radeon R9 270X, which has a GPU core clock speed of 1000 MHz, and 2048 MB of GDDR5 memory running at 1400 MHz through a 256-bit bus. It also is made up of 1280 Stream Processors, 80 Texture Address Units, and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 270X 6590 points
GeForce GTX 660 5063 points
Difference: 1527 (30%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 140 Watts
Radeon R9 270X 180 Watts
Difference: 40 Watts (29%)

Memory Bandwidth

Performance-wise, the Radeon R9 270X should theoretically be quite a bit superior to the GeForce GTX 660 in general. (explain)

Radeon R9 270X 179200 MB/sec
GeForce GTX 660 144192 MB/sec
Difference: 35008 (24%)

Texel Rate

The Radeon R9 270X will be a bit (about 2%) faster with regards to anisotropic filtering than the GeForce GTX 660. (explain)

Radeon R9 270X 80000 Mtexels/sec
GeForce GTX 660 78400 Mtexels/sec
Difference: 1600 (2%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 270X is the winner, by far. (explain)

Radeon R9 270X 32000 Mpixels/sec
GeForce GTX 660 23520 Mpixels/sec
Difference: 8480 (36%)

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.

Price Comparison

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GeForce GTX 660

Amazon.com

Radeon R9 270X

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 660 Radeon R9 270X
Manufacturer nVidia AMD
Year September 2012 October 2013
Code Name GK106 Curacao XT
Memory 2048 MB 2048 MB
Core Speed 980 MHz 1000 MHz
Memory Speed 6008 MHz 5600 MHz
Power (Max TDP) 140 watts 180 watts
Bandwidth 144192 MB/sec 179200 MB/sec
Texel Rate 78400 Mtexels/sec 80000 Mtexels/sec
Pixel Rate 23520 Mpixels/sec 32000 Mpixels/sec
Unified Shaders 960 1280
Texture Mapping Units 80 80
Render Output Units 24 32
Bus Type GDDR5 GDDR5
Bus Width 192-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2540 million 2800 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.2
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 660

Amazon.com

Radeon R9 270X

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.

Comments

3 Responses to “GeForce GTX 660 vs Radeon R9 270X”
Юрий says:

Я вр рот ебал

Анон says:

Пизданул как Господь.

Jonny says:

Jedite govna sa mencmarkom.

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