GeForce GT 340 1GB vs Radeon HD 5450

Intro

Compare all that to the Radeon HD 5450, which comes with a GPU core clock speed of 650 MHz, and 512 MB of DDR3 memory running at 800 MHz through a 64-bit bus. It also features 80(16x5) SPUs, 8 Texture Address Units, and 4 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
GeForce GT 340 1GB		69 Watts
	Difference: 50 Watts (263%)

Memory Bandwidth

In theory, the GeForce GT 340 1GB should be 325% quicker than the Radeon HD 5450 overall, because of its greater data rate. (explain)

GeForce GT 340 1GB		54400 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 41600 (325%)

Texel Rate

The GeForce GT 340 1GB is quite a bit (approximately 238%) better at texture filtering than the Radeon HD 5450. (explain)

GeForce GT 340 1GB		17600 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 12400 (238%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GT 340 1GB is a better choice, and very much so. (explain)

GeForce GT 340 1GB		4400 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 1800 (69%)

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 maximum amount of information (in units of megabytes per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the 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 number of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.