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GeForce GTX 650 vs Radeon R9 M280X

Intro

The GeForce GTX 650 comes with a GPU core clock speed of 1058 MHz, and the 1024 MB of GDDR5 RAM runs at 1250 MHz through a 128-bit bus. It also features 384 SPUs, 32 TAUs, and 16 ROPs.

Compare those specs to the Radeon R9 M280X, which uses a 28 nm design. AMD has clocked the core frequency at 900 MHz. The GDDR5 RAM runs at a frequency of 1375 MHz on this card. It features 896 SPUs as well as 56 Texture Address Units and 16 ROPs.

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

Performance-wise, the Radeon R9 M280X should in theory be a little bit better 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 will be a lot (more or less 49%) faster with regards to AF than the GeForce GTX 650. (explain)

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

Pixel Rate

The GeForce GTX 650 is a bit (more or less 18%) better at anti-aliasing than the Radeon R9 M280X, and should be able to handle higher screen resolutions without losing too much performance. (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 data (in units of megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs 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 fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max 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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