GeForce GTX 580 vs Radeon HD 6450 (OEM)

Intro

Compare those specifications to the Radeon HD 6450 (OEM), which comes with GPU core speed of 625 MHz, and 512 MB of GDDR3 RAM set to run at 800 MHz through a 64-bit bus. It also is made up of 160 Stream Processors, 8 TAUs, and 4 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

GeForce GTX 580		4956 points
Radeon HD 6450 (OEM)		340 points
	Difference: 4616 (1358%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
GeForce GTX 580		244 Watts
	Difference: 213 Watts (687%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 580 should be 1403% quicker than the Radeon HD 6450 (OEM) overall, due to its higher data rate. (explain)

GeForce GTX 580		192384 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 179584 (1403%)

Texel Rate

The GeForce GTX 580 should be a lot (approximately 888%) faster with regards to AF than the Radeon HD 6450 (OEM). (explain)

GeForce GTX 580		49408 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 44408 (888%)

Pixel Rate

The GeForce GTX 580 is a lot (more or less 1382%) better at AA than the Radeon HD 6450 (OEM), and also capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 580		37056 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 34556 (1382%)

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 data (in units of MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory per 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 outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.