Radeon HD 3650 vs Radeon HD 6450 (OEM)

Intro

Compare those specifications to the Radeon HD 6450 (OEM), which comes with GPU core speed of 625 MHz, and 512 MB of GDDR3 RAM set to run at 800 MHz through a 64-bit bus. It also features 160 Stream Processors, 8 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon HD 3650		78 Watts
	Difference: 47 Watts (152%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 3650 should be quite a bit faster than the Radeon HD 6450 (OEM) overall. (explain)

Radeon HD 3650		25600 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 12800 (100%)

Texel Rate

The Radeon HD 3650 should be a little bit (approximately 16%) faster with regards to anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

Radeon HD 3650		5800 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 800 (16%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 3650 is a better choice, though only just barely. (explain)

Radeon HD 3650		2900 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 400 (16%)

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 past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, it must 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.