GeForce GT 315 vs GeForce GT 450 (OEM)

Intro

Compare those specs to the GeForce GT 450 (OEM), which uses a 40 nm design. nVidia has clocked the core frequency at 790 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this specific model. It features 144 SPUs along with 24 Texture Address Units and 24 ROPs.

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

As far as performance goes, the GeForce GT 450 (OEM) should in theory be quite a bit superior to the GeForce GT 315 in general. (explain)

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

Texel Rate

The GeForce GT 450 (OEM) will be a lot (more or less 90%) faster with regards to anisotropic 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

The GeForce GT 450 (OEM) should be much (about 279%) more effective at FSAA than the GeForce GT 315, and should be able to handle higher screen resolutions while still performing well. (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: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is worked out 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 better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.