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Radeon HD 4670 512MB vs Radeon R9 M375

Intro

The Radeon HD 4670 512MB comes with a core clock speed of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory speed of 1000 MHz. It also makes use of a 128-bit bus, and uses a 55 nm design. It is comprised of 320(64x5) SPUs, 32 TAUs, and 8 ROPs.

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

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M375 should be 10% faster 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 quite a bit (about 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

The Radeon R9 M375 is much (approximately 171%) better at FSAA than the Radeon HD 4670 512MB, and able to handle higher screen resolutions without slowing down too much. (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

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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: Bandwidth is the max amount of information (counted in MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 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 texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher this number, the better the video 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 maximum number of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines 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 also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach 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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