Radeon HD 7750 vs Radeon HD 7970

Intro

Compare those specs to the Radeon HD 7970, which comes with clock speeds of 925 MHz on the GPU, and 1375 MHz on the 3072 MB of GDDR5 memory. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

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.

3DMark Fire Strike Graphics Score

Radeon HD 7970		8225 points
Radeon HD 7750		2240 points
	Difference: 5985 (267%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon HD 7970		250 Watts
	Difference: 195 Watts (355%)

Memory Bandwidth

Performance-wise, the Radeon HD 7970 should theoretically be quite a bit better than the Radeon HD 7750 in general. (explain)

Radeon HD 7970		264000 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 192000 (267%)

Texel Rate

The Radeon HD 7970 is much (about 363%) faster with regards to AF than the Radeon HD 7750. (explain)

Radeon HD 7970		118400 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 92800 (363%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7970 is superior to the Radeon HD 7750, by a large margin. (explain)

Radeon HD 7970		29600 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 16800 (131%)

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 largest amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units of the card by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.