GeForce GTX 650 vs Geforce GTX 690

Intro

Compare those specifications to the Geforce GTX 690, which has GPU core speed of 915 MHz, and 2048 MB of GDDR5 RAM running at 1502 MHz through a 256-bit bus. It also features 1536 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Geforce GTX 690		13111 points
GeForce GTX 650		2263 points
	Difference: 10848 (479%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
Geforce GTX 690		300 Watts
	Difference: 236 Watts (369%)

Memory Bandwidth

Performance-wise, the Geforce GTX 690 should in theory be much better than the GeForce GTX 650 overall. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 304512 (381%)

Texel Rate

The Geforce GTX 690 is quite a bit (approximately 592%) faster with regards to texture filtering than the GeForce GTX 650. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 200384 (592%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 690 is a better choice, and very much so. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 41632 (246%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (measured in megabytes per second) that can be transported past the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 in one second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.