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Radeon HD 7750 vs Radeon R9 M395X

Intro

The Radeon HD 7750 features a GPU core clock speed of 800 MHz, and the 1024 MB of GDDR5 memory runs at 1125 MHz through a 128-bit bus. It also features 512 SPUs, 32 TAUs, and 16 Raster Operation Units.

Compare those specs to the Radeon R9 M395X, which has GPU clock speed of 723 MHz, and 4096 MB of GDDR5 RAM running at 1250 MHz through a 256-bit bus. It also features 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
Radeon R9 M395X 125 Watts
Difference: 70 Watts (127%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M395X should theoretically be quite a bit better than the Radeon HD 7750 overall. (explain)

Radeon R9 M395X 160000 MB/sec
Radeon HD 7750 72000 MB/sec
Difference: 88000 (122%)

Texel Rate

The Radeon R9 M395X will be quite a bit (about 262%) faster with regards to texture filtering than the Radeon HD 7750. (explain)

Radeon R9 M395X 92544 Mtexels/sec
Radeon HD 7750 25600 Mtexels/sec
Difference: 66944 (262%)

Pixel Rate

The Radeon R9 M395X will be a lot (more or less 81%) better at FSAA than the Radeon HD 7750, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M395X 23136 Mpixels/sec
Radeon HD 7750 12800 Mpixels/sec
Difference: 10336 (81%)

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

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Radeon HD 7750

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

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Model Radeon HD 7750 Radeon R9 M395X
Manufacturer AMD AMD
Year February 2012 2015
Code Name Cape Verde Pro Tonga
Memory 1024 MB 4096 MB
Core Speed 800 MHz 723 MHz
Memory Speed 4500 MHz 5000 MHz
Power (Max TDP) 55 watts 125 watts
Bandwidth 72000 MB/sec 160000 MB/sec
Texel Rate 25600 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 12800 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 512 2048
Texture Mapping Units 32 128
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 128-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 1500 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 12
OpenGL Version OpenGL 4.2 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, 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 number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 7750

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.

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