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GeForce GTX 260 vs Radeon R5 M255

Intro

The GeForce GTX 260 comes with a GPU core clock speed of 576 MHz, and the 896 MB of GDDR3 RAM runs at 999 MHz through a 448-bit bus. It also is made up of 192 SPUs, 64 TAUs, and 28 Raster Operation Units.

Compare all of that to the Radeon R5 M255, which has GPU core speed of 940 MHz, and 2048 MB of DDR3 RAM set to run at 1000 MHz through a 64-bit bus. It also is made up of 320 Stream Processors, 20 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GTX 260 should perform much faster than the Radeon R5 M255 overall. (explain)

GeForce GTX 260 111888 MB/sec
Radeon R5 M255 16000 MB/sec
Difference: 95888 (599%)

Texel Rate

The GeForce GTX 260 is much (more or less 96%) more effective at anisotropic filtering than the Radeon R5 M255. (explain)

GeForce GTX 260 36864 Mtexels/sec
Radeon R5 M255 18800 Mtexels/sec
Difference: 18064 (96%)

Pixel Rate

The GeForce GTX 260 will be a lot (approximately 114%) more effective at anti-aliasing than the Radeon R5 M255, and should be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 260 16128 Mpixels/sec
Radeon R5 M255 7520 Mpixels/sec
Difference: 8608 (114%)

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 260

Amazon.com

Check prices at:

Radeon R5 M255

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 260 Radeon R5 M255
Manufacturer nVidia AMD
Year June 16, 2008 June 2014
Code Name G200 Jet Pro
Memory 896 MB 2048 MB
Core Speed 576 MHz 940 MHz
Memory Speed 1998 MHz 2000 MHz
Power (Max TDP) 182 watts (Unknown) watts
Bandwidth 111888 MB/sec 16000 MB/sec
Texel Rate 36864 Mtexels/sec 18800 Mtexels/sec
Pixel Rate 16128 Mpixels/sec 7520 Mpixels/sec
Unified Shaders 192 320
Texture Mapping Units 64 20
Render Output Units 28 8
Bus Type GDDR3 DDR3
Bus Width 448-bit 64-bit
Fab Process 65 nm 28 nm
Transistors 1400 million (Unknown) million
Bus PCIe x16 2.0 PCIe 3.0 x8
DirectX Version DirectX 10 DirectX 11.2
OpenGL Version OpenGL 3.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total texture units of the card 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 applied in one second.

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

Display Prices

Hide Prices

GeForce GTX 260

Amazon.com

Check prices at:

Radeon R5 M255

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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