Radeon R7 240 vs Radeon R9 M385X

Intro

Compare all of that to the Radeon R9 M385X, which has a core clock frequency of 1100 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M385X should in theory perform much faster than the Radeon R7 240 in general. (explain)

Radeon R9 M385X		96000 MB/sec
Radeon R7 240		28800 MB/sec
	Difference: 67200 (233%)

Texel Rate

The Radeon R9 M385X is a lot (about 322%) faster with regards to texture filtering than the Radeon R7 240. (explain)

Radeon R9 M385X		61600 Mtexels/sec
Radeon R7 240		14600 Mtexels/sec
	Difference: 47000 (322%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R9 M385X is the winner, by a large margin. (explain)

Radeon R9 M385X		17600 Mpixels/sec
Radeon R7 240		5840 Mpixels/sec
	Difference: 11760 (201%)

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 (in units of megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 are applied in one 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 applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel 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 max fill rate.