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Radeon HD 4670 512MB vs Radeon R9 M375

Intro

The Radeon HD 4670 512MB comes with a clock frequency of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory frequency of 1000 MHz. It also makes use of a 128-bit memory bus, and uses a 55 nm design. It is made up of 320(64x5) SPUs, 32 Texture Address Units, and 8 Raster Operation Units.

Compare all that to the Radeon R9 M375, which has core speeds of 1015 MHz on the GPU, and 1100 MHz on the 4096 MB of DDR3 memory. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M375 will be 10% quicker than the Radeon HD 4670 512MB overall, because of its higher bandwidth. (explain)

Radeon R9 M375 35200 MB/sec
Radeon HD 4670 512MB 32000 MB/sec
Difference: 3200 (10%)

Texel Rate

The Radeon R9 M375 will be much (more or less 69%) better at AF than the Radeon HD 4670 512MB. (explain)

Radeon R9 M375 40600 Mtexels/sec
Radeon HD 4670 512MB 24000 Mtexels/sec
Difference: 16600 (69%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 M375 is a better choice, by far. (explain)

Radeon R9 M375 16240 Mpixels/sec
Radeon HD 4670 512MB 6000 Mpixels/sec
Difference: 10240 (171%)

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 HD 4670 512MB

Amazon.com

Check prices at:

Radeon R9 M375

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 4670 512MB Radeon R9 M375
Manufacturer AMD AMD
Year Sep 10, 2008 2015
Code Name RV730 XT Cape Verde
Memory 512 MB 4096 MB
Core Speed 750 MHz 1015 MHz
Memory Speed 2000 MHz 2200 MHz
Power (Max TDP) 70 watts (Unknown) watts
Bandwidth 32000 MB/sec 35200 MB/sec
Texel Rate 24000 Mtexels/sec 40600 Mtexels/sec
Pixel Rate 6000 Mpixels/sec 16240 Mpixels/sec
Unified Shaders 320(64x5) 640
Texture Mapping Units 32 40
Render Output Units 8 16
Bus Type GDDR4/GDDR3/DDR3/DDR2 DDR3
Bus Width 128-bit 128-bit
Fab Process 55 nm 28 nm
Transistors 514 million (Unknown) million
Bus PCIe 2.0 x16, AGP 8x 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 data (in units of MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4670 512MB

Amazon.com

Check prices at:

Radeon R9 M375

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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