Submit Benchmarks!

Submit SSD Benchmark
Submit GPU Benchmark

Compare any two graphics cards:
VS

Radeon HD 3870 X2 1GB vs Radeon R9 M395X

Intro

The Radeon HD 3870 X2 1GB makes use of a 55 nm design. AMD has clocked the core speed at 825 MHz. The GDDR4 memory is set to run at a speed of 1126 MHz on this model. It features 320(64x5) SPUs along with 16 TAUs and 16 ROPs.

Compare those specifications to the Radeon R9 M395X, which uses a 28 nm design. AMD has clocked the core speed at 723 MHz. The GDDR5 RAM is set to run at a frequency of 1250 MHz on this particular model. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M395X should perform just a bit faster than the Radeon HD 3870 X2 1GB overall. (explain)

Radeon R9 M395X 160000 MB/sec
Radeon HD 3870 X2 1GB 144128 MB/sec
Difference: 15872 (11%)

Texel Rate

The Radeon R9 M395X should be much (more or less 251%) more effective at texture filtering than the Radeon HD 3870 X2 1GB. (explain)

Radeon R9 M395X 92544 Mtexels/sec
Radeon HD 3870 X2 1GB 26400 Mtexels/sec
Difference: 66144 (251%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 3870 X2 1GB is a better choice, but only just. (explain)

Radeon HD 3870 X2 1GB 26400 Mpixels/sec
Radeon R9 M395X 23136 Mpixels/sec
Difference: 3264 (14%)

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 1GB

Amazon.com

Check prices at:

Radeon R9 M395X

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 1GB Radeon R9 M395X
Manufacturer AMD AMD
Year Jan 28, 2008 2015
Code Name R680 Tonga
Memory 1024 MB (x2) 4096 MB
Core Speed 825 MHz (x2) 723 MHz
Memory Speed 2252 MHz (x2) 5000 MHz
Power (Max TDP) (Unknown) watts 125 watts
Bandwidth 144128 MB/sec 160000 MB/sec
Texel Rate 26400 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 26400 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 320(64x5) (x2) 2048
Texture Mapping Units 16 (x2) 128
Render Output Units 16 (x2) 32
Bus Type GDDR4 GDDR5
Bus Width 256-bit (x2) 256-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 x16
DirectX Version DirectX 10.1 DirectX 12
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the bus 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 ANOTHER 2x. The higher the bandwidth is, 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 per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at 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 that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units 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 rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 3870 X2 1GB

Amazon.com

Check prices at:

Radeon R9 M395X

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