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Geforce GTX 760 vs Radeon R9 270

Intro

The Geforce GTX 760 makes use of a 28 nm design. nVidia has clocked the core frequency at 980 MHz. The GDDR5 memory runs at a speed of 1502 MHz on this particular card. It features 1152 SPUs as well as 96 TAUs and 32 ROPs.

Compare all that to the Radeon R9 270, which has a clock speed of 900 MHz and a GDDR5 memory speed of 1400 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1280 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 270 150 Watts
Geforce GTX 760 170 Watts
Difference: 20 Watts (13%)

Memory Bandwidth

In theory, the Geforce GTX 760 is 7% faster than the Radeon R9 270 in general, due to its higher data rate. (explain)

Geforce GTX 760 192256 MB/sec
Radeon R9 270 179200 MB/sec
Difference: 13056 (7%)

Texel Rate

The Geforce GTX 760 should be a lot (more or less 31%) more effective at AF than the Radeon R9 270. (explain)

Geforce GTX 760 94080 Mtexels/sec
Radeon R9 270 72000 Mtexels/sec
Difference: 22080 (31%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 760 is a better choice, not by a very large margin though. (explain)

Geforce GTX 760 31360 Mpixels/sec
Radeon R9 270 28800 Mpixels/sec
Difference: 2560 (9%)

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

Geforce GTX 760

Amazon.com

Radeon R9 270

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

Model Geforce GTX 760 Radeon R9 270
Manufacturer nVidia AMD
Year June 2013 November 2013
Code Name GK104 Curacao Pro
Fab Process 28 nm 28 nm
Bus PCIe 3.0 x16 PCIe 3.0 x16
Memory 2048 MB 2048 MB
Core Speed 980 MHz 900 MHz
Shader Speed 980 MHz (N/A) MHz
Memory Speed 1502 MHz (6008 MHz effective) 1400 MHz (5600 MHz effective)
Unified Shaders 1152 1280
Texture Mapping Units 96 80
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
DirectX Version DirectX 11.0 DirectX 11.2
OpenGL Version OpenGL 4.3 OpenGL 4.3
Power (Max TDP) 170 watts 150 watts
Shader Model 5.0 5.0
Bandwidth 192256 MB/sec 179200 MB/sec
Texel Rate 94080 Mtexels/sec 72000 Mtexels/sec
Pixel Rate 31360 Mpixels/sec 28800 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transferred past the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics 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 that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of 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.

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