GeForce GT 310 vs Radeon HD 6450 (OEM)

Intro

Compare those specs to the Radeon HD 6450 (OEM), which comes with a clock frequency of 625 MHz and a GDDR3 memory frequency of 800 MHz. It also uses a 64-bit bus, and uses a 40 nm design. It is comprised of 160 SPUs, 8 TAUs, and 4 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Performance-wise, the GeForce GT 310 should theoretically be quite a bit superior to the Radeon HD 6450 (OEM) overall. (explain)

GeForce GT 310		16000 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 3200 (25%)

Texel Rate

The Radeon HD 6450 (OEM) is just a bit (about 6%) better at texture filtering than the GeForce GT 310. (explain)

Radeon HD 6450 (OEM)		5000 Mtexels/sec
GeForce GT 310		4712 Mtexels/sec
	Difference: 288 (6%)

Pixel Rate

The Radeon HD 6450 (OEM) will be a small bit (approximately 6%) faster with regards to full screen anti-aliasing than the GeForce GT 310, and capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 6450 (OEM)		2500 Mpixels/sec
GeForce GT 310		2356 Mpixels/sec
	Difference: 144 (6%)

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 (measured in MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.