GeForce GT 315 vs GeForce GT 450 (OEM)

Intro

Compare that to the GeForce GT 450 (OEM), which makes use of a 40 nm design. nVidia has set the core speed at 790 MHz. The GDDR5 RAM runs at a speed of 1000 MHz on this particular model. It features 144 SPUs as well as 24 Texture Address Units and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 54 Watts (104%)

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) should perform much faster than the GeForce GT 315 overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 70720 (280%)

Texel Rate

The GeForce GT 450 (OEM) is a lot (about 90%) faster with regards to texture filtering than the GeForce GT 315. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 8960 (90%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GT 450 (OEM) is a better choice, by far. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 13960 (279%)

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 largest amount of data (counted in MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it must 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 AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics 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 most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units 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 also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.