Radeon R7 240 vs Radeon R9 M265X

Intro

Compare that to the Radeon R9 M265X, which uses a 28 nm design. AMD has set the core speed at 575 MHz. The GDDR5 memory is set to run at a frequency of 1125 MHz on this specific card. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M265X, in theory, should be much faster than the Radeon R7 240 overall. (explain)

Radeon R9 M265X		72000 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 43200 (150%)

Texel Rate

The Radeon R9 M265X is quite a bit (about 58%) better at texture filtering than the Radeon R7 240. (explain)

Radeon R9 M265X		23000 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 8400 (58%)

Pixel Rate

The Radeon R9 M265X should be a lot (about 58%) better at FSAA than the Radeon R7 240, and also will be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 M265X		9200 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 3360 (58%)

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 maximum amount of information (measured in MB per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster 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 can be processed per second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.