Radeon HD 5670 vs Radeon R7 240

Intro

Compare those specs to the Radeon R7 240, which uses a 28 nm design. AMD has clocked the core speed at 730 MHz. The DDR3 memory works at a frequency of 900 MHz on this particular card. It features 320 SPUs as well as 20 Texture Address Units and 8 ROPs.

Display Graphs

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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

Theoretically speaking, the Radeon HD 5670 should perform quite a bit faster than the Radeon R7 240 in general. (explain)

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

Texel Rate

The Radeon HD 5670 should be a small bit (approximately 6%) better at texture filtering than the Radeon R7 240. (explain)

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

Pixel Rate

The Radeon HD 5670 should be just a bit (approximately 6%) better at AA than the Radeon R7 240, and also should be able to handle higher resolutions better. (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 max amount of data (counted in megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 number of texture map elements (texels) that can be processed in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the video 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 most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.