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GeForce GTS 250 512MB vs Radeon R5 M255

Intro

The GeForce GTS 250 512MB uses a 65/55 nm design. nVidia has clocked the core frequency at 738 MHz. The GDDR3 RAM is set to run at a frequency of 1100 MHz on this particular card. It features 128 SPUs along with 64 Texture Address Units and 16 ROPs.

Compare all of that to the Radeon R5 M255, which comes with a core clock frequency of 940 MHz and a DDR3 memory frequency of 1000 MHz. It also makes use of a 64-bit bus, and makes use of a 28 nm design. It is made up of 320 SPUs, 20 TAUs, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTS 250 512MB should be much faster than 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 a lot (about 151%) better at texture filtering 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 (approximately 57%) faster with regards to AA than the Radeon R5 M255, and also will be capable of handling higher screen resolutions while still performing well. (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: Bandwidth is the largest amount of information (in units of MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max 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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