Radeon HD 7750 vs Radeon R9 280

Intro

Compare those specifications to the Radeon R9 280, which features GPU clock speed of 933 MHz, and 3072 MB of GDDR5 memory set to run at 1250 MHz through a 384-bit bus. It also is comprised of 1792 Stream Processors, 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 280		7961 points
Radeon HD 7750		2240 points
	Difference: 5721 (255%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon R9 280		250 Watts
	Difference: 195 Watts (355%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 280 will be 233% quicker than the Radeon HD 7750 overall, due to its higher data rate. (explain)

Radeon R9 280		240000 MB/sec
Radeon HD 7750		72000 MB/sec
	Difference: 168000 (233%)

Texel Rate

The Radeon R9 280 will be a lot (approximately 308%) more effective at anisotropic filtering than the Radeon HD 7750. (explain)

Radeon R9 280		104496 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 78896 (308%)

Pixel Rate

The Radeon R9 280 is much (more or less 133%) more effective at anti-aliasing than the Radeon HD 7750, and also will be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 280		29856 Mpixels/sec
Radeon HD 7750		12800 Mpixels/sec
	Difference: 17056 (133%)

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 data (counted in megabytes per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed 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 the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.