Radeon HD 3650 vs Radeon HD 5570

Intro

Compare all that to the Radeon HD 5570, which makes use of a 40 nm design. AMD has clocked the core speed at 650 MHz. The DDR3 RAM runs at a speed of 900 MHz on this model. It features 400(80x5) SPUs as well as 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
Radeon HD 3650		78 Watts
	Difference: 35 Watts (81%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5570 is 13% faster than the Radeon HD 3650 overall, because of its greater bandwidth. (explain)

Radeon HD 5570		28800 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 3200 (13%)

Texel Rate

The Radeon HD 5570 is much (more or less 124%) more effective at AF than the Radeon HD 3650. (explain)

Radeon HD 5570		13000 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 7200 (124%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 5570 is a better choice, by far. (explain)

Radeon HD 5570		5200 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 2300 (79%)

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 information (measured in MB per second) that can be moved across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at 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 graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.