Radeon HD 5670 vs Radeon R7 250X

Intro

Compare all of that to the Radeon R7 250X, which features a clock speed of 1000 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is comprised of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5670		61 Watts
Radeon R7 250X		95 Watts
	Difference: 34 Watts (56%)

Memory Bandwidth

The Radeon R7 250X, in theory, should perform just a bit faster than the Radeon HD 5670 overall. (explain)

Radeon R7 250X		72000 MB/sec
Radeon HD 5670		64000 MB/sec
	Difference: 8000 (13%)

Texel Rate

The Radeon R7 250X is a lot (more or less 158%) more effective at anisotropic filtering than the Radeon HD 5670. (explain)

Radeon R7 250X		40000 Mtexels/sec
Radeon HD 5670		15500 Mtexels/sec
	Difference: 24500 (158%)

Pixel Rate

The Radeon R7 250X is a lot (more or less 158%) faster with regards to full screen anti-aliasing than the Radeon HD 5670, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R7 250X		16000 Mpixels/sec
Radeon HD 5670		6200 Mpixels/sec
	Difference: 9800 (158%)

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 maximum 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 card's interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.