Radeon HD 6450 (OEM) vs Radeon HD 7970

Intro

Compare those specifications to the Radeon HD 7970, which makes use of a 28 nm design. AMD has set the core speed at 925 MHz. The GDDR5 memory works at a speed of 1375 MHz on this card. It features 2048 SPUs as well as 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

Theoretically, the Radeon HD 7970 should be much faster 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 is quite a bit (about 2268%) more effective at texture 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 running with a high resolution is important to you, then the Radeon HD 7970 is the winner, 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 information (counted in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.