Radeon HD 6450 (OEM) vs Radeon HD 7870 XT

Intro

Compare those specs to the Radeon HD 7870 XT, which makes use of a 28 nm design. AMD has set the core speed at 925 MHz. The GDDR5 RAM runs at a frequency of 1500 MHz on this specific card. It features 1536 SPUs along with 96 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 7870 XT		6390 points
Radeon HD 6450 (OEM)		340 points
	Difference: 6050 (1779%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon HD 7870 XT		185 Watts
	Difference: 154 Watts (497%)

Memory Bandwidth

Performance-wise, the Radeon HD 7870 XT should theoretically be much better than the Radeon HD 6450 (OEM) in general. (explain)

Radeon HD 7870 XT		192000 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 179200 (1400%)

Texel Rate

The Radeon HD 7870 XT should be a lot (about 1676%) faster with regards to texture filtering than the Radeon HD 6450 (OEM). (explain)

Radeon HD 7870 XT		88800 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 83800 (1676%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7870 XT is superior to the Radeon HD 6450 (OEM), and very much so. (explain)

Radeon HD 7870 XT		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 max amount of data (in units of megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the 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 number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 max fill rate.