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Radeon HD 4790 vs Radeon R7 370 4G

Intro

The Radeon HD 4790 has a GPU core clock speed of 600 MHz, and the 512 MB of GDDR5 memory is set to run at 800 MHz through a 256-bit bus. It also is made up of 640(128x5) Stream Processors, 32 TAUs, and 16 ROPs.

Compare those specs to the Radeon R7 370 4G, which comes with a clock speed of 975 MHz and a GDDR5 memory speed of 1400 MHz. It also features a 256-bit bus, and uses a 28 nm design. It is made up of 1024 SPUs, 64 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R7 370 4G is 75% faster than the Radeon HD 4790 in general, due to its greater data rate. (explain)

Radeon R7 370 4G 179200 MB/sec
Radeon HD 4790 102400 MB/sec
Difference: 76800 (75%)

Texel Rate

The Radeon R7 370 4G is quite a bit (approximately 225%) faster with regards to texture filtering than the Radeon HD 4790. (explain)

Radeon R7 370 4G 62400 Mtexels/sec
Radeon HD 4790 19200 Mtexels/sec
Difference: 43200 (225%)

Pixel Rate

The Radeon R7 370 4G will be quite a bit (about 225%) faster with regards to FSAA than the Radeon HD 4790, and also will be capable of handling higher screen resolutions more effectively. (explain)

Radeon R7 370 4G 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 4G

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 4G
Manufacturer AMD AMD
Year 2009 June 2015
Code Name RV790 Trinidad
Memory 512 MB 4096 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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range 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 speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. 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 ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 4790

Amazon.com

Check prices at:

Radeon R7 370 4G

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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