Radeon HD 6670 (OEM) vs Radeon HD 7750

Intro

Compare all of that to the Radeon HD 7750, which uses a 28 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 RAM works at a frequency of 1125 MHz on this particular model. It features 512 SPUs as well as 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7750		2240 points
Radeon HD 6670 (OEM)		1120 points
	Difference: 1120 (100%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750		55 Watts
Radeon HD 6670 (OEM)		63 Watts
	Difference: 8 Watts (15%)

Memory Bandwidth

The Radeon HD 7750, in theory, should perform just a bit faster than the Radeon HD 6670 (OEM) overall. (explain)

Radeon HD 7750		72000 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 8000 (13%)

Texel Rate

The Radeon HD 7750 should be quite a bit (about 33%) more effective at AF than the Radeon HD 6670 (OEM). (explain)

Radeon HD 7750		25600 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 6400 (33%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 7750 is superior to the Radeon HD 6670 (OEM), by far. (explain)

Radeon HD 7750		12800 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 6400 (100%)

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 maximum amount of data (in units of megabytes per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's 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 can be processed in one second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could 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 ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.