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GeForce GTX 550 Ti vs GeForce GTX 650

Intro

The GeForce GTX 550 Ti uses a 40 nm design. nVidia has clocked the core speed at 900 MHz. The GDDR5 memory runs at a frequency of 1026 MHz on this specific model. It features 192 SPUs along with 32 Texture Address Units and 24 ROPs.

Compare all of that to the GeForce GTX 650, which comes with GPU clock speed of 1058 MHz, and 2048 MB of GDDR5 RAM running at 1250 MHz through a 128-bit bus. It also is comprised of 384 SPUs, 32 TAUs, and 16 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce GTX 550 Ti 116 Watts
Difference: 52 Watts (81%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 550 Ti should theoretically be much better than the GeForce GTX 650 in general. (explain)

GeForce GTX 550 Ti 98496 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 18496 (23%)

Texel Rate

The GeForce GTX 650 should be a little bit (more or less 18%) more effective at texture filtering than the GeForce GTX 550 Ti. (explain)

GeForce GTX 650 33856 Mtexels/sec
GeForce GTX 550 Ti 28800 Mtexels/sec
Difference: 5056 (18%)

Pixel Rate

The GeForce GTX 550 Ti is much (more or less 28%) more effective at full screen anti-aliasing than the GeForce GTX 650, and will be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 550 Ti 21600 Mpixels/sec
GeForce GTX 650 16928 Mpixels/sec
Difference: 4672 (28%)

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 550 Ti

Amazon.com

GeForce GTX 650

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Model GeForce GTX 550 Ti GeForce GTX 650
Manufacturer nVidia nVidia
Year March 2011 September 2012
Code Name GF116 GK107
Fab Process 40 nm 28 nm
Bus PCIe 2.1 x16 PCIe 3.0 x16
Memory 1024 MB 2048 MB
Core Speed 900 MHz 1058 MHz
Shader Speed 1800 MHz 1058 MHz
Memory Speed 1026 MHz (4104 MHz effective) 1250 MHz (5000 MHz effective)
Unified Shaders 192 384
Texture Mapping Units 32 32
Render Output Units 24 16
Bus Type GDDR5 GDDR5
Bus Width 192-bit 128-bit
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3
Power (Max TDP) 116 watts 64 watts
Shader Model 5.0 5.0
Bandwidth 98496 MB/sec 80000 MB/sec
Texel Rate 28800 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 16928 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transferred across the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 amount of texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. 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 lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Comments

8 Responses to “GeForce GTX 550 Ti vs GeForce GTX 650”
Rcoil says:
I'm not sure about the increase of the performance from the GTX 550 Ti to GTX 650
Med Ali says:
even for me increase of performances between the 650 and 550ti are only in the Unified Shaders and the texel rate.
Rcoil says:
If you look at the following link http://www.geforce.com/Active/en_US/shared/images/products/shared/lineup.png just a little bit different. and even then only in synthetic benchmarks. not the real game.
Kirvic says:
Hi, what about video edition, which one is better to work for example in Adobe Premiere Pro CS6? or After Effects?
RODRIGO KELLY SILVA DE MATTOS says:
If you note, the power consumption of 650 is lower than the 550 ti, so you dont have to buy a great energy source!
jhon says:
gtx550ti has pci 2.0 and its 1gb its power consumation is higher .while gtx65 has 3.0 pci and its 2gb and power consumation is lower. if u really want to buy 192bits then it is better to buy 256bits.
Hannes says:
550ti is better for me texel memorry and pixel rate Hannes
edin says:
i play all games with high AF on my HD 6670 1gb ddr5, but i cant play new games on 1080p,only low to medium detail and off Anti Alaising, so beter card is the one that can play 1080p without lag, in this case gtx 550ti with bigger pixel rate

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