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Radeon HD 4670 1GB vs Radeon R9 M385X

Intro

The Radeon HD 4670 1GB has a GPU clock speed of 750 MHz, and the 1024 MB of GDDR4/GDDR3/DDR3/DDR2 RAM runs at 1100 MHz through a 128-bit bus. It also is comprised of 320(64x5) Stream Processors, 32 Texture Address Units, and 8 Raster Operation Units.

Compare those specs to the Radeon R9 M385X, which comes with a core clock frequency of 1100 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 M385X should be quite a bit faster than the Radeon HD 4670 1GB in general. (explain)

Radeon R9 M385X 96000 MB/sec
Radeon HD 4670 1GB 35200 MB/sec
Difference: 60800 (173%)

Texel Rate

The Radeon R9 M385X will be quite a bit (more or less 157%) faster with regards to texture filtering than the Radeon HD 4670 1GB. (explain)

Radeon R9 M385X 61600 Mtexels/sec
Radeon HD 4670 1GB 24000 Mtexels/sec
Difference: 37600 (157%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M385X is a better choice, by a large margin. (explain)

Radeon R9 M385X 17600 Mpixels/sec
Radeon HD 4670 1GB 6000 Mpixels/sec
Difference: 11600 (193%)

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 1GB

Amazon.com

Check prices at:

Radeon R9 M385X

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 1GB Radeon R9 M385X
Manufacturer AMD AMD
Year Sep 10, 2008 2015
Code Name RV730 XT Bonaire
Memory 1024 MB 4096 MB
Core Speed 750 MHz 1100 MHz
Memory Speed 2200 MHz 6000 MHz
Power (Max TDP) 70 watts (Unknown) watts
Bandwidth 35200 MB/sec 96000 MB/sec
Texel Rate 24000 Mtexels/sec 61600 Mtexels/sec
Pixel Rate 6000 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 320(64x5) 896
Texture Mapping Units 32 56
Render Output Units 8 16
Bus Type GDDR4/GDDR3/DDR3/DDR2 GDDR5
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 (measured in megabytes per second) that can be moved across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 4670 1GB

Amazon.com

Check prices at:

Radeon R9 M385X

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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