Radeon HD 6790 vs Radeon R7 240

Intro

Compare that to the Radeon R7 240, which has a core clock frequency of 730 MHz and a DDR3 memory speed of 900 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It is made up of 320 SPUs, 20 TAUs, and 8 ROPs.

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 HD 6790		2150 points
Radeon R7 240		1218 points
	Difference: 932 (77%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 6790		150 Watts
	Difference: 120 Watts (400%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6790 should in theory be much better than the Radeon R7 240 in general. (explain)

Radeon HD 6790		134400 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 105600 (367%)

Texel Rate

The Radeon HD 6790 will be a lot (approximately 130%) better at anisotropic filtering than the Radeon R7 240. (explain)

Radeon HD 6790		33600 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 19000 (130%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 6790 is a better choice, by a large margin. (explain)

Radeon HD 6790		13440 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 7600 (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: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 texture map elements (texels) that are applied per second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics 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 could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.