Radeon HD 7750 vs Radeon R9 285

Intro

Compare those specs to the Radeon R9 285, which has core speeds of 918 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1792 SPUs along with 112 TAUs 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.

3DMark Fire Strike Graphics Score

Radeon R9 285		8500 points
Radeon HD 7750		2240 points
	Difference: 6260 (279%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon R9 285		190 Watts
	Difference: 135 Watts (245%)

Memory Bandwidth

The Radeon R9 285 should in theory be much faster than the Radeon HD 7750 in general. (explain)

Radeon R9 285		176000 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 104000 (144%)

Texel Rate

The Radeon R9 285 will be much (more or less 302%) more effective at texture filtering than the Radeon HD 7750. (explain)

Radeon R9 285		102816 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 77216 (302%)

Pixel Rate

The Radeon R9 285 will be quite a bit (approximately 130%) faster with regards to anti-aliasing than the Radeon HD 7750, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 285		29376 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 16576 (130%)

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 (counted in megabytes per second) that can be moved across the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the 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 amount of texture map elements (texels) that can be processed in one second. This number is calculated 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.