Radeon HD 6570 (OEM) 2GB vs Radeon HD 7750

Intro

Compare all of that to the Radeon HD 7750, which has a core clock frequency of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 512 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB		50 Watts
Radeon HD 7750		55 Watts
	Difference: 5 Watts (10%)

Memory Bandwidth

In theory, the Radeon HD 7750 is 13% quicker than the Radeon HD 6570 (OEM) 2GB in general, due to its greater data rate. (explain)

Radeon HD 7750		72000 MB/sec
Radeon HD 6570 (OEM) 2GB		64000 MB/sec
	Difference: 8000 (13%)

Texel Rate

The Radeon HD 7750 should be a lot (approximately 64%) better at AF than the Radeon HD 6570 (OEM) 2GB. (explain)

Radeon HD 7750		25600 Mtexels/sec
Radeon HD 6570 (OEM) 2GB		15600 Mtexels/sec
	Difference: 10000 (64%)

Pixel Rate

The Radeon HD 7750 will be a lot (approximately 146%) faster with regards to full screen anti-aliasing than the Radeon HD 6570 (OEM) 2GB, and also should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 7750		12800 Mpixels/sec
Radeon HD 6570 (OEM) 2GB		5200 Mpixels/sec
	Difference: 7600 (146%)

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 (counted in MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.