Radeon HD 3650 vs Radeon R7 250

Intro

Compare all that to the Radeon R7 250, which comes with GPU core speed of 1000 MHz, and 1024 MB of GDDR5 memory set to run at 1150 MHz through a 128-bit bus. It also is comprised of 384 SPUs, 24 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250		65 Watts
Radeon HD 3650		78 Watts
	Difference: 13 Watts (20%)

Memory Bandwidth

As far as performance goes, the Radeon R7 250 should theoretically be much superior to the Radeon HD 3650 overall. (explain)

Radeon R7 250		73600 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 48000 (188%)

Texel Rate

The Radeon R7 250 should be much (approximately 314%) better at texture filtering than the Radeon HD 3650. (explain)

Radeon R7 250		24000 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 18200 (314%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R7 250 is superior to the Radeon HD 3650, and very much so. (explain)

Radeon R7 250		8000 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 5100 (176%)

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 largest amount of information (measured in MB per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 can be processed per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record 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 the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.