GeForce 825M vs Radeon R9 M365X

Intro

Compare that to the Radeon R9 M365X, which comes with core clock speeds of 925 MHz on the GPU, and 1125 MHz on the 4096 MB of GDDR5 memory. It features 640 SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 M365X should in theory be much better than the GeForce 825M overall. (explain)

Radeon R9 M365X		72000 MB/sec
GeForce 825M		14400 MB/sec
	Difference: 57600 (400%)

Texel Rate

The Radeon R9 M365X will be much (approximately 172%) more effective at AF than the GeForce 825M. (explain)

Radeon R9 M365X		37000 Mtexels/sec
GeForce 825M		13600 Mtexels/sec
	Difference: 23400 (172%)

Pixel Rate

The Radeon R9 M365X will be quite a bit (more or less 118%) faster with regards to full screen anti-aliasing than the GeForce 825M, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 M365X		14800 Mpixels/sec
GeForce 825M		6800 Mpixels/sec
	Difference: 8000 (118%)

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 largest amount of data (counted in megabytes per second) that can be moved over the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the 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 applied per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.