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Radeon HD 4850 X2 1GB vs Radeon R9 M375X

Intro

The Radeon HD 4850 X2 1GB makes use of a 55 nm design. AMD has clocked the core speed at 625 MHz. The GDDR3 RAM is set to run at a frequency of 993 MHz on this specific card. It features 800(160x5) SPUs along with 40 TAUs and 16 ROPs.

Compare those specifications to the Radeon R9 M375X, which has a clock frequency of 1015 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit memory bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 4850 X2 1GB should theoretically be a lot faster than the Radeon R9 M375X overall. (explain)

Radeon HD 4850 X2 1GB 127104 MB/sec
Radeon R9 M375X 72000 MB/sec
Difference: 55104 (77%)

Texel Rate

The Radeon HD 4850 X2 1GB is much (approximately 23%) better at AF than the Radeon R9 M375X. (explain)

Radeon HD 4850 X2 1GB 50000 Mtexels/sec
Radeon R9 M375X 40600 Mtexels/sec
Difference: 9400 (23%)

Pixel Rate

The Radeon HD 4850 X2 1GB will be much (more or less 23%) more effective at full screen anti-aliasing than the Radeon R9 M375X, and also should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon HD 4850 X2 1GB 20000 Mpixels/sec
Radeon R9 M375X 16240 Mpixels/sec
Difference: 3760 (23%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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Radeon HD 4850 X2 1GB

Amazon.com

Check prices at:

Radeon R9 M375X

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 4850 X2 1GB Radeon R9 M375X
Manufacturer AMD AMD
Year Nov 7, 2008 2015
Code Name R700 Cape Verde
Memory 1024 MB (x2) 4096 MB
Core Speed 625 MHz (x2) 1015 MHz
Memory Speed 1986 MHz (x2) 4500 MHz
Power (Max TDP) 250 watts (Unknown) watts
Bandwidth 127104 MB/sec 72000 MB/sec
Texel Rate 50000 Mtexels/sec 40600 Mtexels/sec
Pixel Rate 20000 Mpixels/sec 16240 Mpixels/sec
Unified Shaders 800(160x5) (x2) 640
Texture Mapping Units 40 (x2) 40
Render Output Units 16 (x2) 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 128-bit
Fab Process 55 nm 28 nm
Transistors 956 million (Unknown) million
Bus PCIe 2.0 x16 (PCIe bridge) 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 max amount of data (counted in megabytes per second) that can be transferred past the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 are processed in one second. This number is calculated by multiplying the total amount of texture units by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 4850 X2 1GB

Amazon.com

Check prices at:

Radeon R9 M375X

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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