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GeForce GTX 260 vs Radeon R5 M255

Intro

The GeForce GTX 260 has clock speeds of 576 MHz on the GPU, and 999 MHz on the 896 MB of GDDR3 memory. It features 192 SPUs along with 64 Texture Address Units and 28 Rasterization Operator Units.

Compare all of that to the Radeon R5 M255, which comes with core clock speeds of 940 MHz on the GPU, and 1000 MHz on the 2048 MB of DDR3 RAM. It features 320 SPUs as well as 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the GeForce GTX 260 should be a lot 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 should be quite a bit (approximately 96%) more effective at texture 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 is quite a bit (more or less 114%) faster with regards to FSAA than the Radeon R5 M255, and also 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: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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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.

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