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Radeon HD 4790 vs Radeon R7 370 2G

Intro

The Radeon HD 4790 has core speeds of 600 MHz on the GPU, and 800 MHz on the 512 MB of GDDR5 RAM. It features 640(128x5) SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Compare all that to the Radeon R7 370 2G, which features clock speeds of 975 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1024 SPUs as well as 64 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R7 370 2G should in theory perform quite a bit faster than the Radeon HD 4790 overall. (explain)

Radeon R7 370 2G 179200 MB/sec
Radeon HD 4790 102400 MB/sec
Difference: 76800 (75%)

Texel Rate

The Radeon R7 370 2G should be much (approximately 225%) better at AF than the Radeon HD 4790. (explain)

Radeon R7 370 2G 62400 Mtexels/sec
Radeon HD 4790 19200 Mtexels/sec
Difference: 43200 (225%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R7 370 2G is the winner, by far. (explain)

Radeon R7 370 2G 31200 Mpixels/sec
Radeon HD 4790 9600 Mpixels/sec
Difference: 21600 (225%)

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 4790

Amazon.com

Check prices at:

Radeon R7 370 2G

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 4790 Radeon R7 370 2G
Manufacturer AMD AMD
Year 2009 June 2015
Code Name RV790 Trinidad
Memory 512 MB 2048 MB
Core Speed 600 MHz 975 MHz
Memory Speed 3200 MHz 5600 MHz
Power (Max TDP) (Unknown) watts 110 watts
Bandwidth 102400 MB/sec 179200 MB/sec
Texel Rate 19200 Mtexels/sec 62400 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 31200 Mpixels/sec
Unified Shaders 640(128x5) 1024
Texture Mapping Units 32 64
Render Output Units 16 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 55 nm 28 nm
Transistors 959 million 2080 million
Bus PCIe 2.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 10.1 DirectX 12.0
OpenGL Version OpenGL 3.0 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher 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 graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Radeon HD 4790

Amazon.com

Check prices at:

Radeon R7 370 2G

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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