Radeon HD 7790 vs Radeon R9 290

Intro

Compare those specifications to the Radeon R9 290, which has clock speeds of 800 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2560 SPUs as well as 160 TAUs and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 290		9876 points
Radeon HD 7790		4330 points
	Difference: 5546 (128%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon R9 290		300 Watts
	Difference: 215 Watts (253%)

Memory Bandwidth

Performance-wise, the Radeon R9 290 should theoretically be a lot superior to the Radeon HD 7790 in general. (explain)

Radeon R9 290		320000 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 224000 (233%)

Texel Rate

The Radeon R9 290 should be a lot (approximately 129%) better at AF than the Radeon HD 7790. (explain)

Radeon R9 290		128000 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 72000 (129%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 290 is the winner, by far. (explain)

Radeon R9 290		51200 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 35200 (220%)

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 MB per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, 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 amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.