GeForce GTX 980 vs Radeon HD 6750

Intro

Compare those specifications to the Radeon HD 6750, which makes use of a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 RAM works at a speed of 1000 MHz on this specific card. It features 720 SPUs along with 36 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6750		86 Watts
GeForce GTX 980		165 Watts
	Difference: 79 Watts (92%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 980 should be 250% quicker than the Radeon HD 6750 overall, because of its higher bandwidth. (explain)

GeForce GTX 980		224000 MB/sec
Radeon HD 6750		64000 MB/sec
	Difference: 160000 (250%)

Texel Rate

The GeForce GTX 980 is quite a bit (more or less 452%) better at anisotropic filtering than the Radeon HD 6750. (explain)

GeForce GTX 980		144128 Mtexels/sec
Radeon HD 6750		26100 Mtexels/sec
	Difference: 118028 (452%)

Pixel Rate

The GeForce GTX 980 will be a lot (about 521%) more effective at AA than the Radeon HD 6750, and will be able to handle higher screen resolutions better. (explain)

GeForce GTX 980		72064 Mpixels/sec
Radeon HD 6750		11600 Mpixels/sec
	Difference: 60464 (521%)

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 data (measured in MB per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 are applied per second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics 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 number of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.