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GeForce GTS 250 512MB vs Radeon R5 M255

Intro

The GeForce GTS 250 512MB comes with a GPU core clock speed of 738 MHz, and the 512 MB of GDDR3 memory runs at 1100 MHz through a 256-bit bus. It also is comprised of 128 Stream Processors, 64 Texture Address Units, and 16 ROPs.

Compare those specifications to the Radeon R5 M255, which has GPU clock 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 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTS 250 512MB should in theory be quite a bit superior to the Radeon R5 M255 in general. (explain)

GeForce GTS 250 512MB 70400 MB/sec
Radeon R5 M255 16000 MB/sec
Difference: 54400 (340%)

Texel Rate

The GeForce GTS 250 512MB should be much (approximately 151%) better at AF than the Radeon R5 M255. (explain)

GeForce GTS 250 512MB 47232 Mtexels/sec
Radeon R5 M255 18800 Mtexels/sec
Difference: 28432 (151%)

Pixel Rate

The GeForce GTS 250 512MB is much (about 57%) better at anti-aliasing than the Radeon R5 M255, and will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTS 250 512MB 11808 Mpixels/sec
Radeon R5 M255 7520 Mpixels/sec
Difference: 4288 (57%)

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 GTS 250 512MB

Amazon.com

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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 GTS 250 512MB Radeon R5 M255
Manufacturer nVidia AMD
Year March 3, 2009 June 2014
Code Name G92a/b Jet Pro
Memory 512 MB 2048 MB
Core Speed 738 MHz 940 MHz
Memory Speed 2200 MHz 2000 MHz
Power (Max TDP) 145 watts (Unknown) watts
Bandwidth 70400 MB/sec 16000 MB/sec
Texel Rate 47232 Mtexels/sec 18800 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 7520 Mpixels/sec
Unified Shaders 128 320
Texture Mapping Units 64 20
Render Output Units 16 8
Bus Type GDDR3 DDR3
Bus Width 256-bit 64-bit
Fab Process 65/55 nm 28 nm
Transistors 754 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 (counted in MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce GTS 250 512MB

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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