Radeon R7 M265 vs Radeon R9 390 8G

Intro

Compare all that to the Radeon R9 390 8G, which has clock speeds of 1000 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 RAM. It features 2560 SPUs as well as 160 Texture Address Units and 64 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 390 8G		12733 points
Radeon R7 M265		3256 points
	Difference: 9477 (291%)

Ethereum Mining Hash Rate

Radeon R9 390 8G		28 Mh/s
Radeon R7 M265		14 Mh/s
	Difference: 14 (100%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 390 8G should theoretically be a lot superior to the Radeon R7 M265 in general. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 352000 (1100%)

Texel Rate

The Radeon R9 390 8G should be a lot (about 820%) better at texture filtering than the Radeon R7 M265. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 142600 (820%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 390 8G is the winner, by a large margin. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 58200 (1003%)

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 (in units of MB per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units by the core 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 applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core clock speed. 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 rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.