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GeForce GTX 650 vs Radeon R9 M265X

Intro

The GeForce GTX 650 makes use of a 28 nm design. nVidia has clocked the core frequency at 1058 MHz. The GDDR5 RAM runs at a speed of 1250 MHz on this particular card. It features 384 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Compare those specifications to the Radeon R9 M265X, which comes with GPU clock speed of 575 MHz, and 2048 MB of GDDR5 memory set to run at 1125 MHz through a 128-bit bus. It also is made up of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the GeForce GTX 650 should theoretically be a small bit superior to the Radeon R9 M265X overall. (explain)

GeForce GTX 650 80000 MB/sec
Radeon R9 M265X 72000 MB/sec
Difference: 8000 (11%)

Texel Rate

The GeForce GTX 650 will be a lot (approximately 47%) faster with regards to AF than the Radeon R9 M265X. (explain)

GeForce GTX 650 33856 Mtexels/sec
Radeon R9 M265X 23000 Mtexels/sec
Difference: 10856 (47%)

Pixel Rate

The GeForce GTX 650 should be quite a bit (more or less 84%) more effective at anti-aliasing than the Radeon R9 M265X, and will be able to handle higher screen resolutions better. (explain)

GeForce GTX 650 16928 Mpixels/sec
Radeon R9 M265X 9200 Mpixels/sec
Difference: 7728 (84%)

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 M265X

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 M265X
Manufacturer nVidia AMD
Year September 2012 May 1 2014
Code Name GK107 Venus Pro
Memory 1024 MB 2048 MB
Core Speed 1058 MHz 575 MHz
Memory Speed 5000 MHz 4500 MHz
Power (Max TDP) 64 watts (Unknown) watts
Bandwidth 80000 MB/sec 72000 MB/sec
Texel Rate 33856 Mtexels/sec 23000 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 384 640
Texture Mapping Units 32 40
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 largest amount of information (in units of MB per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 650

Amazon.com

Check prices at:

Radeon R9 M265X

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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