Radeon HD 6990 vs Radeon R7 370 4G

Intro

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

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

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Radeon HD 6990		24 Mh/s
Radeon R7 370 4G		17 Mh/s
	Difference: 7 (41%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 4G		110 Watts
Radeon HD 6990		375 Watts
	Difference: 265 Watts (241%)

Memory Bandwidth

The Radeon HD 6990 should in theory be a lot faster than the Radeon R7 370 4G overall. (explain)

Radeon HD 6990		320000 MB/sec
Radeon R7 370 4G		179200 MB/sec
	Difference: 140800 (79%)

Texel Rate

The Radeon HD 6990 is a lot (approximately 155%) faster with regards to AF than the Radeon R7 370 4G. (explain)

Radeon HD 6990		159360 Mtexels/sec
Radeon R7 370 4G		62400 Mtexels/sec
	Difference: 96960 (155%)

Pixel Rate

The Radeon HD 6990 is quite a bit (more or less 70%) better at full screen anti-aliasing than the Radeon R7 370 4G, and also should be able to handle higher resolutions without losing too much performance. (explain)

Radeon HD 6990		53120 Mpixels/sec
Radeon R7 370 4G		31200 Mpixels/sec
	Difference: 21920 (70%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one 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 figure is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.