Radeon R7 M265 vs Radeon R9 285

Intro

Compare those specs to the Radeon R9 285, which comes with a clock speed of 918 MHz and a GDDR5 memory speed of 1375 MHz. It also features a 256-bit bus, and uses a 28 nm design. It is comprised of 1792 SPUs, 112 TAUs, and 32 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 285		8500 points
Radeon R7 M265		3256 points
	Difference: 5244 (161%)

Ethereum Mining Hash Rate

Radeon R9 285		18 Mh/s
Radeon R7 M265		14 Mh/s
	Difference: 4 (29%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 285 will be 450% faster than the Radeon R7 M265 overall, because of its greater bandwidth. (explain)

Radeon R9 285		176000 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 144000 (450%)

Texel Rate

The Radeon R9 285 is a lot (more or less 491%) faster with regards to AF than the Radeon R7 M265. (explain)

Radeon R9 285		102816 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 85416 (491%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 285 is superior to the Radeon R7 M265, by far. (explain)

Radeon R9 285		29376 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 23576 (406%)

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 max amount of data (measured in MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.