Radeon HD 6790 vs Radeon R7 370 4G

Intro

Compare those specifications to the Radeon R7 370 4G, which comes with a clock frequency of 975 MHz and a GDDR5 memory frequency of 1400 MHz. It also uses a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1024 SPUs, 64 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 4G		110 Watts
Radeon HD 6790		150 Watts
	Difference: 40 Watts (36%)

Memory Bandwidth

Performance-wise, the Radeon R7 370 4G should theoretically be a lot better than the Radeon HD 6790 in general. (explain)

Radeon R7 370 4G		179200 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 44800 (33%)

Texel Rate

The Radeon R7 370 4G is quite a bit (about 86%) faster with regards to AF than the Radeon HD 6790. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 28800 (86%)

Pixel Rate

The Radeon R7 370 4G should be a lot (about 132%) faster with regards to full screen anti-aliasing than the Radeon HD 6790, and should be able to handle higher screen resolutions better. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 17760 (132%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen 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 of the card by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.