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GeForce GTX 650 vs Radeon R9 M280X

Intro

The GeForce GTX 650 comes with clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs along with 32 Texture Address Units and 16 Rasterization Operator Units.

Compare that to the Radeon R9 M280X, which has a GPU core clock speed of 900 MHz, and 4096 MB of GDDR5 RAM set to run at 1375 MHz through a 128-bit bus. It also features 896 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
Radeon R9 M280X 75 Watts
Difference: 11 Watts (17%)

Memory Bandwidth

Theoretically, the Radeon R9 M280X should be a bit faster than the GeForce GTX 650 in general. (explain)

Radeon R9 M280X 88000 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 8000 (10%)

Texel Rate

The Radeon R9 M280X should be quite a bit (about 49%) more effective at AF than the GeForce GTX 650. (explain)

Radeon R9 M280X 50400 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 16544 (49%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 650 is a better choice, but it probably won't make a huge difference. (explain)

GeForce GTX 650 16928 Mpixels/sec
Radeon R9 M280X 14400 Mpixels/sec
Difference: 2528 (18%)

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 650

Amazon.com

Check prices at:

Radeon R9 M280X

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 650 Radeon R9 M280X
Manufacturer nVidia AMD
Year September 2012 Feb 9 2015
Code Name GK107 Saturn XT
Memory 1024 MB 4096 MB
Core Speed 1058 MHz 900 MHz
Memory Speed 5000 MHz 5500 MHz
Power (Max TDP) 64 watts 75 watts
Bandwidth 80000 MB/sec 88000 MB/sec
Texel Rate 33856 Mtexels/sec 50400 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 14400 Mpixels/sec
Unified Shaders 384 896
Texture Mapping Units 32 56
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 1300 million (Unknown) 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: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transported across the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GTX 650

Amazon.com

Check prices at:

Radeon R9 M280X

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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