Radeon HD 3650 256MB vs Radeon HD 6450 (OEM)

Intro

Compare all of that to the Radeon HD 6450 (OEM), which has core speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 memory. It features 160 SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon HD 3650 256MB		78 Watts
	Difference: 47 Watts (152%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 3650 256MB should be 100% faster than the Radeon HD 6450 (OEM) overall, due to its greater data rate. (explain)

Radeon HD 3650 256MB		25600 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 12800 (100%)

Texel Rate

The Radeon HD 3650 256MB should be a little bit (approximately 16%) more effective at texture filtering than the Radeon HD 6450 (OEM). (explain)

Radeon HD 3650 256MB		5800 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 800 (16%)

Pixel Rate

The Radeon HD 3650 256MB is a little bit (more or less 16%) faster with regards to anti-aliasing than the Radeon HD 6450 (OEM), and will be able to handle higher screen resolutions better. (explain)

Radeon HD 3650 256MB		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 data (measured in megabytes per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.