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GeForce GTX 650 vs GeForce GTX 660


Intro

The GeForce GTX 650 comes with a core clock speed of 1058 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It features 384 SPUs, 32 TAUs, and 16 ROPs.

Compare those specifications to the GeForce GTX 660, which comes with GPU core speed of 980 MHz, and 2048 MB of GDDR5 RAM set to run at 1502 MHz through a 192-bit bus. It also is comprised of 960 Stream Processors, 80 TAUs, and 24 Raster Operation Units.

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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 660 5090 points
GeForce GTX 650 2270 points
Difference: 2820 (124%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTX 660 140 Watts
Difference: 76 Watts (119%)

Memory Bandwidth

In theory, the GeForce GTX 660 will be 80% quicker than the GeForce GTX 650 overall, due to its higher bandwidth. (explain)

GeForce GTX 660 144192 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 64192 (80%)

Texel Rate

The GeForce GTX 660 will be a lot (more or less 132%) faster with regards to texture filtering than the GeForce GTX 650. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 44544 (132%)

Pixel Rate

The GeForce GTX 660 will be quite a bit (about 39%) better at anti-aliasing than the GeForce GTX 650, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 660 23520 Mpixels/sec
GeForce GTX 650 16928 Mpixels/sec
Difference: 6592 (39%)

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

GeForce GTX 650

GeForce GTX 660

Specifications

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Model GeForce GTX 650 GeForce GTX 660
Manufacturer nVidia nVidia
Year September 2012 September 2012
Code Name GK107 GK106
Memory 1024 MB 2048 MB
Core Speed 1058 MHz 980 MHz
Memory Speed 5000 MHz 6008 MHz
Power (Max TDP) 64 watts 140 watts
Bandwidth 80000 MB/sec 144192 MB/sec
Texel Rate 33856 Mtexels/sec 78400 Mtexels/sec
Pixel Rate 16928 Mpixels/sec 23520 Mpixels/sec
Unified Shaders 384 960
Texture Mapping Units 32 80
Render Output Units 16 24
Bus Type GDDR5 GDDR5
Bus Width 128-bit 192-bit
Fab Process 28 nm 28 nm
Transistors 1300 million 2540 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.0 DirectX 11.0
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be moved across the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 texture map elements (texels) that are applied in one second. This is calculated by multiplying the total number of texture units of the card 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

GeForce GTX 650

GeForce GTX 660

Comments

16 Responses to “GeForce GTX 650 vs GeForce GTX 660”
Compare says:

This is a good comparison of GeForce GTX 650 vs GeForce GTX 660

Compare says:

This is not a good comparison of GeForce GTX 650 vs GeForce GTX 660

Compare says:

I have conflicting emotions about whether this is a good comparison of GeForce GTX 650 vs GeForce GTX 660

compare says:

This is/isn't a good comparison of GeForce GTX 650 vs GeForce GTX 660 at same time!

Compare says:

This is a mildy awesome comparison of Geforce GTX 650 vs GeForce GTX 660

Compare says:

This comparison of Geforce GTX 650 vs GeForce GTX 660 has potential but must try harder

Compare says:

This comparison of Geforce GTX 650 vs GeForce GTX 660 is a comparison.

Erbil says:

Och du Jockel sach bloss -.-

Compare says:

This comparison of Geforce GTX 650 vs GeForce GTX 660 is worth a nutsack.

Viprus says:

I'm Commander Shepard and this is my favorite comparison of Geforce GTX 650 vs GeForce GTX 660 on the Citadel.

Somebuyd says:

Vhat das da fox say ? 660 dingoring

Compare says:

A good comparison of GeForce GTX 650 vs Geforce GTX 660 or not, this is.

Compare says:

This is a comparison.

trent says:

I wonder about the performance of the 650SC vs 660...

Stephen says:

This comparison could be compared with other comparisons, including comparisons of the GTX 650 and 660.

Jeffrey says:

Take it from someone who upgraded from a 9800gt to a GTX650 to a GTX660. The first upgrade was a slight improvement (rather disappointing in fact). But the jump from the 650 to the 660 was huge! Hello 1080 gaming!

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