I get commissions for purchases made through links on this page. (more info)

Compare any two graphics cards:
VS

Radeon R9 380X vs Radeon R9 M385X

Intro

The Radeon R9 380X comes with a core clock speed of 970 MHz and a GDDR5 memory speed of 1425 MHz. It also features a 256-bit bus, and makes use of a 28 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon R9 M385X, which comes with a clock frequency of 1100 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 380X will be 90% quicker than the Radeon R9 M385X overall, because of its greater data rate. (explain)

Radeon R9 380X 182400 MB/sec
Radeon R9 M385X 96000 MB/sec
Difference: 86400 (90%)

Texel Rate

The Radeon R9 380X is quite a bit (about 102%) better at anisotropic filtering than the Radeon R9 M385X. (explain)

Radeon R9 380X 124160 Mtexels/sec
Radeon R9 M385X 61600 Mtexels/sec
Difference: 62560 (102%)

Pixel Rate

The Radeon R9 380X will be quite a bit (approximately 76%) better at full screen anti-aliasing than the Radeon R9 M385X, and will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 380X 31040 Mpixels/sec
Radeon R9 M385X 17600 Mpixels/sec
Difference: 13440 (76%)

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

Display Prices

Hide Prices

Radeon R9 380X

Amazon.com

Check prices at:

Radeon R9 M385X

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 R9 380X Radeon R9 M385X
Manufacturer AMD AMD
Year November 2015 2015
Code Name Tonga XT Bonaire
Memory 4096 MB 4096 MB
Core Speed 970 MHz 1100 MHz
Memory Speed 5700 MHz 6000 MHz
Power (Max TDP) 190 watts (Unknown) watts
Bandwidth 182400 MB/sec 96000 MB/sec
Texel Rate 124160 Mtexels/sec 61600 Mtexels/sec
Pixel Rate 31040 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 2048 896
Texture Mapping Units 128 56
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 28 nm 28 nm
Transistors 5000 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many 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 R9 380X

Amazon.com

Check prices at:

Radeon R9 M385X

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