Radeon HD 3650 vs Radeon R9 M390X

Intro

Compare those specs to the Radeon R9 M390X, which makes use of a 28 nm design. AMD has clocked the core speed at 723 MHz. The GDDR5 RAM is set to run at a speed of 1250 MHz on this specific card. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650		78 Watts
Radeon R9 M390X		125 Watts
	Difference: 47 Watts (60%)

Memory Bandwidth

Performance-wise, the Radeon R9 M390X should theoretically be much superior to the Radeon HD 3650 in general. (explain)

Radeon R9 M390X		160000 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 134400 (525%)

Texel Rate

The Radeon R9 M390X will be much (approximately 1496%) better at AF than the Radeon HD 3650. (explain)

Radeon R9 M390X		92544 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 86744 (1496%)

Pixel Rate

The Radeon R9 M390X should be much (about 698%) more effective at full screen anti-aliasing than the Radeon HD 3650, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

Radeon R9 M390X		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: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. 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 - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.