Radeon HD 3650 vs Radeon HD 5570

Intro

Compare those specifications to the Radeon HD 5570, which comes with a core clock speed of 650 MHz and a DDR3 memory frequency of 900 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It features 400(80x5) SPUs, 20 TAUs, and 8 ROPs.

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

The Radeon HD 5570 should in theory be just a bit faster than the Radeon HD 3650 in general. (explain)

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

Texel Rate

The Radeon HD 5570 is a lot (approximately 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

The Radeon HD 5570 should be much (about 79%) faster with regards to AA than the Radeon HD 3650, and also able to handle higher resolutions without losing too much performance. (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: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred across the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.