Radeon HD 3650 vs Radeon R9 390 8G

Intro

Compare all that to the Radeon R9 390 8G, which has core speeds of 1000 MHz on the GPU, and 1500 MHz on the 8192 MB of GDDR5 memory. It features 2560 SPUs along with 160 TAUs and 64 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650		78 Watts
Radeon R9 390 8G		275 Watts
	Difference: 197 Watts (253%)

Memory Bandwidth

In theory, the Radeon R9 390 8G should perform quite a bit faster than the Radeon HD 3650 overall. (explain)

Radeon R9 390 8G		384000 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 358400 (1400%)

Texel Rate

The Radeon R9 390 8G is a lot (more or less 2659%) more effective at anisotropic filtering than the Radeon HD 3650. (explain)

Radeon R9 390 8G		160000 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 154200 (2659%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 390 8G is the winner, by far. (explain)

Radeon R9 390 8G		64000 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 61100 (2107%)

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 maximum amount of data (in units of megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. In the case of 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units by the core 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to 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 potential to reach the maximum fill rate.