GeForce GTS 150 vs Radeon HD 4670 1GB

Intro

Compare those specs to the Radeon HD 4670 1GB, which features a clock speed of 750 MHz and a GDDR4/GDDR3/DDR3/DDR2 memory speed of 1100 MHz. It also features a 128-bit bus, and uses a 55 nm design. It is comprised of 320(64x5) SPUs, 32 TAUs, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 1GB		70 Watts
GeForce GTS 150		141 Watts
	Difference: 71 Watts (101%)

Memory Bandwidth

The Radeon HD 4670 1GB, in theory, should be just a bit faster than the GeForce GTS 150 in general. (explain)

Radeon HD 4670 1GB		35200 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 3200 (10%)

Texel Rate

The GeForce GTS 150 should be quite a bit (more or less 97%) better at anisotropic filtering than the Radeon HD 4670 1GB. (explain)

GeForce GTS 150		47360 Mtexels/sec
Radeon HD 4670 1GB		24000 Mtexels/sec
	Difference: 23360 (97%)

Pixel Rate

The GeForce GTS 150 is a lot (about 97%) faster with regards to AA than the Radeon HD 4670 1GB, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTS 150		11840 Mpixels/sec
Radeon HD 4670 1GB		6000 Mpixels/sec
	Difference: 5840 (97%)

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 information (counted in MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the 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 amount of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock 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 fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.