Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

Radeon HD 3870 X2 512MB vs Radeon R5 M255

Intro

The Radeon HD 3870 X2 512MB features a GPU core clock speed of 825 MHz, and the 512 MB of GDDR3 RAM is set to run at 900 MHz through a 256-bit bus. It also is comprised of 320(64x5) SPUs, 16 TAUs, and 16 ROPs.

Compare all of that to the Radeon R5 M255, which has core 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 TAUs and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 3870 X2 512MB should be 620% quicker than the Radeon R5 M255 overall, due to its higher data rate. (explain)

Radeon HD 3870 X2 512MB 115200 MB/sec
Radeon R5 M255 16000 MB/sec
Difference: 99200 (620%)

Texel Rate

The Radeon HD 3870 X2 512MB is much (approximately 40%) faster with regards to anisotropic filtering than the Radeon R5 M255. (explain)

Radeon HD 3870 X2 512MB 26400 Mtexels/sec
Radeon R5 M255 18800 Mtexels/sec
Difference: 7600 (40%)

Pixel Rate

The Radeon HD 3870 X2 512MB is much (more or less 251%) faster with regards to anti-aliasing than the Radeon R5 M255, and also will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 3870 X2 512MB 26400 Mpixels/sec
Radeon R5 M255 7520 Mpixels/sec
Difference: 18880 (251%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Display Prices

Hide Prices

Radeon HD 3870 X2 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.

Specifications

Display Specifications

Hide Specifications

Model Radeon HD 3870 X2 512MB Radeon R5 M255
Manufacturer AMD AMD
Year Jan 28, 2008 June 2014
Code Name R680 Jet Pro
Memory 512 MB (x2) 2048 MB
Core Speed 825 MHz (x2) 940 MHz
Memory Speed 1800 MHz (x2) 2000 MHz
Power (Max TDP) (Unknown) watts (Unknown) watts
Bandwidth 115200 MB/sec 16000 MB/sec
Texel Rate 26400 Mtexels/sec 18800 Mtexels/sec
Pixel Rate 26400 Mpixels/sec 7520 Mpixels/sec
Unified Shaders 320(64x5) (x2) 320
Texture Mapping Units 16 (x2) 20
Render Output Units 16 (x2) 8
Bus Type GDDR3 DDR3
Bus Width 256-bit (x2) 64-bit
Fab Process 55 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 2.0 x16/(internal PCIe 1.1 x16) PCIe 3.0 x8
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transported across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster 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 can be applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core 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 number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate 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 filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 3870 X2 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.

Comments

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti-Spam by WP-SpamShield