Radeon HD 6450 (OEM) vs Radeon HD 6970

Intro

Compare all that to the Radeon HD 6970, which features a core clock frequency of 880 MHz and a GDDR5 memory frequency of 1375 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It is comprised of 1536 SPUs, 96 TAUs, and 32 Raster Operation Units.

Display Graphs

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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 6970		3470 points
Radeon HD 6450 (OEM)		340 points
	Difference: 3130 (921%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon HD 6970		250 Watts
	Difference: 219 Watts (706%)

Memory Bandwidth

In theory, the Radeon HD 6970 should be 1275% faster than the Radeon HD 6450 (OEM) in general, because of its higher data rate. (explain)

Radeon HD 6970		176000 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 163200 (1275%)

Texel Rate

The Radeon HD 6970 is much (about 1590%) faster with regards to anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

Radeon HD 6970		84480 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 79480 (1590%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 6970 is superior to the Radeon HD 6450 (OEM), by far. (explain)

Radeon HD 6970		28160 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 25660 (1026%)

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 (in units of MB per second) that can be transferred over the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.