Radeon HD 6750 1GB vs Radeon R9 280X

Intro

Compare all of that to the Radeon R9 280X, which uses a 28 nm design. AMD has set the core frequency at 850 MHz. The GDDR5 RAM is set to run at a frequency of 1500 MHz on this particular card. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750 1GB		86 Watts
Radeon R9 280X		250 Watts
	Difference: 164 Watts (191%)

Memory Bandwidth

In theory, the Radeon R9 280X is 350% quicker than the Radeon HD 6750 1GB in general, because of its greater data rate. (explain)

Radeon R9 280X		288000 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 224000 (350%)

Texel Rate

The Radeon R9 280X should be a lot (about 317%) more effective at AF than the Radeon HD 6750 1GB. (explain)

Radeon R9 280X		108800 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 82700 (317%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 280X is the winner, and very much so. (explain)

Radeon R9 280X		27200 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 15600 (134%)

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 megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends 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.