Radeon HD 5670 vs Radeon R7 240

Intro

Compare all that to the Radeon R7 240, which features 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 Texture Address Units, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 240		30 Watts
Radeon HD 5670		61 Watts
	Difference: 31 Watts (103%)

Memory Bandwidth

The Radeon HD 5670, in theory, should perform much faster than the Radeon R7 240 overall. (explain)

Radeon HD 5670		64000 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 35200 (122%)

Texel Rate

The Radeon HD 5670 will be just a bit (approximately 6%) more effective at AF than the Radeon R7 240. (explain)

Radeon HD 5670		15500 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 900 (6%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 5670 is superior to the Radeon R7 240, but it probably won't make a huge difference. (explain)

Radeon HD 5670		6200 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 360 (6%)

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 (measured in megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units of the card by the core clock 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.