Radeon HD 6950 vs Radeon R7 250X

Intro

Compare those specifications to the Radeon R7 250X, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 RAM works at a frequency of 1125 MHz on this particular card. It features 640 SPUs along with 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 6950		3240 points
Radeon R7 250X		2860 points
	Difference: 380 (13%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

Theoretically speaking, the Radeon HD 6950 should be 122% quicker than the Radeon R7 250X overall, because of its higher bandwidth. (explain)

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

Texel Rate

The Radeon HD 6950 will be a lot (about 76%) better at anisotropic filtering than the Radeon R7 250X. (explain)

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

Pixel Rate

The Radeon HD 6950 should be a lot (more or less 60%) faster with regards to anti-aliasing than the Radeon R7 250X, and also capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 6950		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 largest amount of information (counted in megabytes per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units by the core 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 in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock 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 rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.