Radeon HD 3650 vs Radeon R9 M395X

Intro

Compare all that to the Radeon R9 M395X, which makes use of a 28 nm design. AMD has clocked the core speed at 723 MHz. The GDDR5 memory works at a frequency of 1250 MHz on this particular model. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650		78 Watts
Radeon R9 M395X		125 Watts
	Difference: 47 Watts (60%)

Memory Bandwidth

In theory, the Radeon R9 M395X should perform quite a bit faster than the Radeon HD 3650 overall. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 134400 (525%)

Texel Rate

The Radeon R9 M395X will be quite a bit (about 1496%) more effective at anisotropic filtering than the Radeon HD 3650. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 86744 (1496%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 M395X is a better choice, and very much so. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 20236 (698%)

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 (in units of megabytes per second) that can be transported over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at 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 video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called 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, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.