Radeon HD 7790 vs Radeon R7 240

Intro

Compare those specs to the Radeon R7 240, which has a clock frequency of 730 MHz and a DDR3 memory speed of 900 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It features 320 SPUs, 20 TAUs, and 8 Raster Operation 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 HD 7790		4330 points
Radeon R7 240		1218 points
	Difference: 3112 (256%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 7790		85 Watts
	Difference: 55 Watts (183%)

Memory Bandwidth

In theory, the Radeon HD 7790 should be a lot faster than the Radeon R7 240 overall. (explain)

Radeon HD 7790		96000 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 67200 (233%)

Texel Rate

The Radeon HD 7790 should be much (about 284%) faster with regards to AF than the Radeon R7 240. (explain)

Radeon HD 7790		56000 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 41400 (284%)

Pixel Rate

The Radeon HD 7790 is quite a bit (more or less 174%) faster with regards to full screen anti-aliasing than the Radeon R7 240, and should be capable of handling higher resolutions better. (explain)

Radeon HD 7790		16000 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 10160 (174%)

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 largest amount of data (in units of megabytes per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR RAM, it 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed 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 better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

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