Radeon R7 M265 vs Radeon R9 M290X

Intro

Compare that to the Radeon R9 M290X, which comes with a clock speed of 850 MHz and a GDDR5 memory speed of 1200 MHz. It also makes use of a 256-bit memory bus, and uses a 28 nm design. It is made up of 1280 SPUs, 80 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 M290X should be a lot faster than the Radeon R7 M265 in general. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 121600 (380%)

Texel Rate

The Radeon R9 M290X is much (about 291%) faster with regards to texture filtering than the Radeon R7 M265. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 50600 (291%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 M290X is superior to the Radeon R7 M265, by far. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 21400 (369%)

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 information (in units of MB per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 processed per second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.