GeForce GT 315 vs Radeon HD 6450 (OEM) 1GB

Intro

Compare that to the Radeon HD 6450 (OEM) 1GB, which makes use of a 40 nm design. AMD has clocked the core frequency at 750 MHz. The GDDR5 memory works at a speed of 900 MHz on this specific model. It features 160 SPUs along with 8 TAUs and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB		31 Watts
GeForce GT 315		52 Watts
	Difference: 21 Watts (68%)

Memory Bandwidth

In theory, the Radeon HD 6450 (OEM) 1GB is 14% faster than the GeForce GT 315 in general, due to its greater data rate. (explain)

Radeon HD 6450 (OEM) 1GB		28800 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 3520 (14%)

Texel Rate

The GeForce GT 315 is much (more or less 67%) more effective at AF than the Radeon HD 6450 (OEM) 1GB. (explain)

GeForce GT 315		10000 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 4000 (67%)

Pixel Rate

The GeForce GT 315 should be much (approximately 67%) more effective at anti-aliasing than the Radeon HD 6450 (OEM) 1GB, and also able to handle higher resolutions without slowing down too much. (explain)

GeForce GT 315		5000 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 2000 (67%)

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 information (counted in megabytes per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at 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 card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka 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 - the lower the bandwidth is, the lower the potential to reach the max fill rate.