Radeon HD 6570 (OEM) 1GB vs Radeon HD 7870 XT

Intro

Compare those specifications to the Radeon HD 7870 XT, which has a GPU core clock speed of 925 MHz, and 2048 MB of GDDR5 RAM running at 1500 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 96 TAUs, and 32 ROPs.

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 7870 XT		6390 points
Radeon HD 6570 (OEM) 1GB		850 points
	Difference: 5540 (652%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 1GB		50 Watts
Radeon HD 7870 XT		185 Watts
	Difference: 135 Watts (270%)

Memory Bandwidth

The Radeon HD 7870 XT should in theory perform a lot faster than the Radeon HD 6570 (OEM) 1GB overall. (explain)

Radeon HD 7870 XT		192000 MB/sec
Radeon HD 6570 (OEM) 1GB		28800 MB/sec
	Difference: 163200 (567%)

Texel Rate

The Radeon HD 7870 XT should be much (about 469%) more effective at texture filtering than the Radeon HD 6570 (OEM) 1GB. (explain)

Radeon HD 7870 XT		88800 Mtexels/sec
Radeon HD 6570 (OEM) 1GB		15600 Mtexels/sec
	Difference: 73200 (469%)

Pixel Rate

The Radeon HD 7870 XT will be much (approximately 469%) faster with regards to AA than the Radeon HD 6570 (OEM) 1GB, and should be able to handle higher resolutions better. (explain)

Radeon HD 7870 XT		29600 Mpixels/sec
Radeon HD 6570 (OEM) 1GB		5200 Mpixels/sec
	Difference: 24400 (469%)

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 max amount of data (measured in megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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