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Radeon R9 380 4G vs Radeon R9 M295X

Intro

The Radeon R9 380 4G uses a 28 nm design. AMD has set the core frequency at 970 MHz. The GDDR5 RAM is set to run at a frequency of 1425 MHz on this model. It features 1792 SPUs along with 112 TAUs and 32 ROPs.

Compare that to the Radeon R9 M295X, which has a core clock frequency of 750 MHz and a GDDR5 memory speed of 1375 MHz. It also uses a 256-bit bus, and uses a 28 nm design. It features 2048 SPUs, 128 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X 125 Watts
Radeon R9 380 4G 190 Watts
Difference: 65 Watts (52%)

Memory Bandwidth

The Radeon R9 380 4G should in theory perform just a bit faster than the Radeon R9 M295X overall. (explain)

Radeon R9 380 4G 182400 MB/sec
Radeon R9 M295X 176000 MB/sec
Difference: 6400 (4%)

Texel Rate

The Radeon R9 380 4G is a bit (more or less 13%) better at anisotropic filtering than the Radeon R9 M295X. (explain)

Radeon R9 380 4G 108640 Mtexels/sec
Radeon R9 M295X 96000 Mtexels/sec
Difference: 12640 (13%)

Pixel Rate

The Radeon R9 380 4G is quite a bit (approximately 29%) faster with regards to full screen anti-aliasing than the Radeon R9 M295X, and also capable of handling higher resolutions without losing too much performance. (explain)

Radeon R9 380 4G 31040 Mpixels/sec
Radeon R9 M295X 24000 Mpixels/sec
Difference: 7040 (29%)

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 380 4G

Amazon.com

Check prices at:

Radeon R9 M295X

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 380 4G Radeon R9 M295X
Manufacturer AMD AMD
Year June 2015 2014
Code Name Antigua PRO Unknown
Memory 4096 MB 4096 MB
Core Speed 970 MHz 750 MHz
Memory Speed 5700 MHz 5500 MHz
Power (Max TDP) 190 watts 125 watts
Bandwidth 182400 MB/sec 176000 MB/sec
Texel Rate 108640 Mtexels/sec 96000 Mtexels/sec
Pixel Rate 31040 Mpixels/sec 24000 Mpixels/sec
Unified Shaders 1792 2048
Texture Mapping Units 112 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 5000 million (Unknown) million
Bus PCIe 3.0 ×16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 11.2
OpenGL Version OpenGL 4.5 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling 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 the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon R9 380 4G

Amazon.com

Check prices at:

Radeon R9 M295X

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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