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Radeon R9 M280X vs Radeon R9 M375X

Intro

The Radeon R9 M280X features a GPU core speed of 900 MHz, and the 4096 MB of GDDR5 RAM runs at 1375 MHz through a 128-bit bus. It also is comprised of 896 Stream Processors, 56 Texture Address Units, and 16 ROPs.

Compare those specifications to the Radeon R9 M375X, which features core clock speeds of 1015 MHz on the GPU, and 1125 MHz on the 4096 MB of GDDR5 memory. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M280X will be 22% faster than the Radeon R9 M375X overall, due to its greater bandwidth. (explain)

Radeon R9 M280X 88000 MB/sec
Radeon R9 M375X 72000 MB/sec
Difference: 16000 (22%)

Texel Rate

The Radeon R9 M280X should be quite a bit (more or less 24%) better at texture filtering than the Radeon R9 M375X. (explain)

Radeon R9 M280X 50400 Mtexels/sec
Radeon R9 M375X 40600 Mtexels/sec
Difference: 9800 (24%)

Pixel Rate

The Radeon R9 M375X is a little bit (approximately 13%) faster with regards to FSAA than the Radeon R9 M280X, and also will be able to handle higher resolutions while still performing well. (explain)

Radeon R9 M375X 16240 Mpixels/sec
Radeon R9 M280X 14400 Mpixels/sec
Difference: 1840 (13%)

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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Radeon R9 M280X

Amazon.com

Check prices at:

Radeon R9 M375X

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 Radeon R9 M280X Radeon R9 M375X
Manufacturer AMD AMD
Year Feb 9 2015 2015
Code Name Saturn XT Cape Verde
Memory 4096 MB 4096 MB
Core Speed 900 MHz 1015 MHz
Memory Speed 5500 MHz 4500 MHz
Power (Max TDP) 75 watts (Unknown) watts
Bandwidth 88000 MB/sec 72000 MB/sec
Texel Rate 50400 Mtexels/sec 40600 Mtexels/sec
Pixel Rate 14400 Mpixels/sec 16240 Mpixels/sec
Unified Shaders 896 640
Texture Mapping Units 56 40
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 28 nm
Transistors (Unknown) million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of information (in units of MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. 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 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 clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure 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 outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon R9 M280X

Amazon.com

Check prices at:

Radeon R9 M375X

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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