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GeForce GTX 260 vs Radeon R5 M255

Intro

The GeForce GTX 260 has a clock frequency of 576 MHz and a GDDR3 memory frequency of 999 MHz. It also features a 448-bit memory bus, and makes use of a 65 nm design. It is comprised of 192 SPUs, 64 TAUs, and 28 ROPs.

Compare those specifications to the Radeon R5 M255, which makes use of a 28 nm design. AMD has set the core speed at 940 MHz. The DDR3 RAM is set to run at a frequency of 1000 MHz on this specific model. It features 320 SPUs along with 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 260 should perform a lot faster than the Radeon R5 M255 in general. (explain)

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

Texel Rate

The GeForce GTX 260 will be much (approximately 96%) faster with regards to 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 much (about 114%) faster with regards to full screen anti-aliasing than the Radeon R5 M255, and will be capable of handling higher screen resolutions better. (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 max amount of information (measured in MB per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better 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 number of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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 rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability 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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