Radeon HD 6450 (OEM) vs Radeon HD 7970

Intro

Compare those specifications to the Radeon HD 7970, which comes with core clock speeds of 925 MHz on the GPU, and 1375 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs along with 128 Texture Address Units and 32 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 7970		8225 points
Radeon HD 6450 (OEM)		340 points
	Difference: 7885 (2319%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon HD 7970		250 Watts
	Difference: 219 Watts (706%)

Memory Bandwidth

Performance-wise, the Radeon HD 7970 should in theory be quite a bit better than the Radeon HD 6450 (OEM) overall. (explain)

Radeon HD 7970		264000 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 251200 (1963%)

Texel Rate

The Radeon HD 7970 will be quite a bit (more or less 2268%) better at anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

Radeon HD 7970		118400 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 113400 (2268%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 7970 is superior to the Radeon HD 6450 (OEM), by far. (explain)

Radeon HD 7970		29600 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 27100 (1084%)

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 maximum amount of data (measured in MB per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 can be processed per second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core 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 rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.