Radeon HD 3650 vs Radeon R9 M290X

Intro

Compare that to the Radeon R9 M290X, which makes use of a 28 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 RAM works at a speed of 1200 MHz on this particular model. It features 1280 SPUs along with 80 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650		78 Watts
Radeon R9 M290X		100 Watts
	Difference: 22 Watts (28%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M290X should theoretically be a lot superior to the Radeon HD 3650 overall. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 128000 (500%)

Texel Rate

The Radeon R9 M290X is a lot (more or less 1072%) more effective at AF than the Radeon HD 3650. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 62200 (1072%)

Pixel Rate

The Radeon R9 M290X should be quite a bit (more or less 838%) better at AA than the Radeon HD 3650, and able to handle higher resolutions more effectively. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 24300 (838%)

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 max amount of data (in units of 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 the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could 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 Render Output Units by the clock 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 output rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.