Radeon HD 6750 1GB vs Radeon R9 M275X

Intro

Compare those specifications to the Radeon R9 M275X, which has a clock frequency of 900 MHz and a GDDR5 memory frequency of 1125 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M275X		50 Watts
Radeon HD 6750 1GB		86 Watts
	Difference: 36 Watts (72%)

Memory Bandwidth

The Radeon R9 M275X, in theory, should perform just a bit faster than the Radeon HD 6750 1GB overall. (explain)

Radeon R9 M275X		72000 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 8000 (13%)

Texel Rate

The Radeon R9 M275X is quite a bit (about 38%) faster with regards to texture filtering than the Radeon HD 6750 1GB. (explain)

Radeon R9 M275X		36000 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 9900 (38%)

Pixel Rate

The Radeon R9 M275X is quite a bit (more or less 24%) faster with regards to FSAA than the Radeon HD 6750 1GB, and should be able to handle higher resolutions better. (explain)

Radeon R9 M275X		14400 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 2800 (24%)

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 max amount of data (measured in MB per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 amount of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount of texture units 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.