GeForce GT 450 (OEM) vs Radeon HD 5870

Intro

Compare those specs to the Radeon HD 5870, which uses a 40 nm design. AMD has clocked the core frequency at 850 MHz. The GDDR5 RAM works at a frequency of 1200 MHz on this card. It features 1600(320x5) SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
Radeon HD 5870		188 Watts
	Difference: 82 Watts (77%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 should be quite a bit faster than the GeForce GT 450 (OEM) in general. (explain)

Radeon HD 5870		153600 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 57600 (60%)

Texel Rate

The Radeon HD 5870 will be quite a bit (about 259%) better at anisotropic filtering than the GeForce GT 450 (OEM). (explain)

Radeon HD 5870		68000 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 49040 (259%)

Pixel Rate

The Radeon HD 5870 will be quite a bit (about 43%) faster with regards to full screen anti-aliasing than the GeForce GT 450 (OEM), and able to handle higher resolutions while still performing well. (explain)

Radeon HD 5870		27200 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 8240 (43%)

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 maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the 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 processed per second. This number 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

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