Radeon R7 M265 vs Radeon R9 M380

Intro

Compare that to the Radeon R9 M380, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM runs at a frequency of 1500 MHz on this particular model. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M380 should in theory perform much faster than the Radeon R7 M265 in general. (explain)

Radeon R9 M380		96000 MB/sec
Radeon R7 M265		32000 MB/sec
	Difference: 64000 (200%)

Texel Rate

The Radeon R9 M380 will be a lot (more or less 130%) more effective at texture filtering than the Radeon R7 M265. (explain)

Radeon R9 M380		40000 Mtexels/sec
Radeon R7 M265		17400 Mtexels/sec
	Difference: 22600 (130%)

Pixel Rate

The Radeon R9 M380 will be quite a bit (more or less 176%) more effective at FSAA than the Radeon R7 M265, and will be able to handle higher resolutions better. (explain)

Radeon R9 M380		16000 Mpixels/sec
Radeon R7 M265		5800 Mpixels/sec
	Difference: 10200 (176%)

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 (measured in megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock 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 fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.