Radeon HD 4670 512MB vs Radeon R7 240

Intro

Compare all that to the Radeon R7 240, which has core clock speeds of 730 MHz on the GPU, and 900 MHz on the 2048 MB of DDR3 memory. 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 4670 512MB		70 Watts
	Difference: 40 Watts (133%)

Memory Bandwidth

In theory, the Radeon HD 4670 512MB should be a little bit faster than the Radeon R7 240 overall. (explain)

Radeon HD 4670 512MB		32000 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 3200 (11%)

Texel Rate

The Radeon HD 4670 512MB is a lot (more or less 64%) faster with regards to AF than the Radeon R7 240. (explain)

Radeon HD 4670 512MB		24000 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 9400 (64%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 4670 512MB is superior to the Radeon R7 240, but not by far. (explain)

Radeon HD 4670 512MB		6000 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 160 (3%)

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 information (counted in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.