Radeon HD 6950 2GB vs Radeon R7 250X

Intro

Compare all that to the Radeon R7 250X, which has a GPU core clock speed of 1000 MHz, and 1024 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also is made up of 640 Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
Radeon HD 6950 2GB		200 Watts
	Difference: 105 Watts (111%)

Memory Bandwidth

The Radeon HD 6950 2GB should theoretically be much faster than the Radeon R7 250X in general. (explain)

Radeon HD 6950 2GB		160000 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 88000 (122%)

Texel Rate

The Radeon HD 6950 2GB will be much (approximately 76%) more effective at texture filtering than the Radeon R7 250X. (explain)

Radeon HD 6950 2GB		70400 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 30400 (76%)

Pixel Rate

The Radeon HD 6950 2GB will be a lot (approximately 60%) more effective at FSAA than the Radeon R7 250X, and capable of handling higher resolutions better. (explain)

Radeon HD 6950 2GB		25600 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 9600 (60%)

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 max amount of data (measured in megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 get to the max fill rate.