660m vs 650m DDR5

Can someone help me understand the differences between these two models? Is it essentially just a higher clock in the 660m?

 

660M also comes in an MXM 3.0 or 3.1 format, allowing you to upgrade it later, and may be found in notebooks with better cooling solutions, giving it more overclocking headroom. But they're basically the same card, yes.

 

No one can say anything about the differences, because neither card has been released or reviewed.

 

Not entirely true... we have what Nvidia tells us for specs which are most certainly true. We also have Nvidia's own comparisons between their own products which is probably true at stock.

Source:
GeForce Graphics Processors (GPUs) | NVIDIA GeForce

*****
660M
384 cores
835MHz
30.4 billion textures/sec
Memory clock 2000
Memory interface GDDR5
128-bit
Memory Bandwidth 64.0 GB/sec
SLI 2-way
*****
650M
384 cores
735MHz (with GDDDR5)
Up to 27.2 billion textures/sec
GDDR5
128-bit
Memory Bandwidth up to 64.0GB/sec
*****

So, in a nutshell the GDDR5-variant of the 650M will be lower-clocked (and likely lower-binned as the 660Ms will likely be the pickof the litter) and not support SLI.

Nvidia's graphs seem to indicated a 10% performance difference or so, but given the clock rate difference at stock I'd say 10-15%. Odds are the 660ms will have more OC headroom as well due to being chosen for having better stability at higher clocks.

 

No it's not. A notebook with the GTX 660M will fire lasers and exhaust blue flames if you do the konami code at any moment.

Oh wait, yes it is.

 

now that both these cards are out, can someone outline the differences between these two cards including benchmark differences and in game fps?

I'm planning to get the msi ge60, currently equipped with 650m gddr5, the 660m version will come in a couple weeks.

Is it worth waiting for the 660m?

Is the performance increase from 650m gddr5 to 660m worth losing the battery life?

thanks

 

I would go with the 660m. The difference is significant. You don't really need a whole new arch to improve things. True that you are paying for the same product with a higher clock speed (a process that requires little effort on the part of the manufacturer) but still.

About the battery life, well, it is up to you. Is battery life really important for you? How often will you play games unplugged?

 

I would get the 650m gddr5 as its the sweetspot I would say. Theres no real difference apart from the 660m being slightly better.

 

You don't even lose battery life with the 660m. The MSI should have optimus.

 

GTX 660M
DX10 Vantage GPU: 9803
DX11 3DMark11 GPU: 2288

GT 650M:
DX10 Vantage GPU: 7900
DX11 3DMark11 GPU: 2078

Here, I`m too lazy to do it
http://www.marshu.com/articles/calculate-percent-with-percentage-calculator.php

 

But that's without OC, right? And what resolution is this on because I've seen the GT 650m almost break 2500 on 3DMark11. I've also heard of one person overclocking the GT650m to 880/1500 (3000mhz GDDR5 effective), which surpasses the GTX 660m stock by a large amount. That's not to say the 660m can't be clocked further...but still.

 

&%"#¤" I forgot that 650M also have DDR3. Ok forget what I just said.

660M
DX10 Vantage GPU 9803
DX11 3DMark11 GPU 2288

650M GDDR5
DX10 Vantage GPU 8445
DX11 3DMark11 GPU 2015

Yes without overclock, all tested on standard resolutions 1280x720 for 3DMark11 and 1280x1024 for Vantage. I got the scores from notebookcheck. Both GPUs should overclock equally good since its the same GPU. I guess cooling system is what determine the difference in two systems
http://www.notebookcheck.net/NVIDIA-GeForce-GT-650M.71887.0.html

 

Some of the game fps stats on notebook check sys the 650m does better, that's probably a mistake. I just want to play skyrim on 1080p on medium. Is the 650m enough for that?

 

Well this is Anandtech testing the GT 650M DDR3 version and it gets over 30FPS with 4xAA, Texture pack and Ultra 1080p. The GDDR5 should score more than that. GT 650M should have no problem with Skyrim 1080p on medium.



Here is medium but not 1080p.


High settings but not 1080p

AnandTech - Eurocom Monster 1.0: Clevo's Little Monster

 

Thanks a lot cloudfire!!

i'm planning to play at medium, but unlike that graphic, i wanna play at 1920x1080.

i should be at 40 fps at least then

 

More like 50-60FPS

 

these vantage scores for the 650m gddr5 are a little low, I think if you get the 2GB GDDR5 version the scores should be more like this:
NVIDIA GeForce GT 650M video card benchmark result - Intel Core i7-3720QM Processor,Alienware M14xR2 score: P11903 3DMarks

NVIDIA GeForce GT 650M video card benchmark result - Intel Core i7-3720QM Processor,Alienware M14xR2 score: P11690 3DMarks

 

I did testing on 650m DDR3 on my Clevo W110ER at 720p and 1080p. See here:
http://forum.notebookreview.com/sag...evo-w110er-first-look-review.html#post8493515

 

so would you guys say...

660m is...

10% better than 650m Gddr5
15% better than 650m ddr3
20% better than 640m

something like that???

 

Think of it as closer to...

15%
20%
25%

 

Don`t ever use 3DMark.com as a source for benchmarks results. It is useful to find different overclock results, but for stock results it is literally impossible to find how the GPU perform not overclocked.

You picked the best score of GT 650M there. If you look you can see that it is 3 pages full of scores.

 

Has anyone else tried OC'ing this card?

 

Hi,
Tested on Asus N56VZ with 650M and 2GB DDR3 + i5-3210

3dmark11
- Stock - P2246 3DMarks ; details here: NVIDIA GeForce GT 650M video card benchmark result - Intel Core i5-3210M Processor,ASUSTeK COMPUTER INC. N56VZ score: P2246 3DMarks
- OCed to +66MHz core and +166MHz mem - bye bye GGDR 5 and stock 660M - P2479 3DMarks NVIDIA GeForce GT 650M video card benchmark result - Intel Core i5-3210M Processor,ASUSTeK COMPUTER INC. N56VZ score: P2479 3DMarks
OCed values are not final yet, but seem to be hardrock stable (I've played crysis warhead without one glitch for two days with these settings, max. temp 74, usually around 69).

 

I thought noone had problems OCing the 650 and the 660 to at least the stock allowed +135MHz core and few hundred MHz on memory.

 

Sure, but I've posted some results, and I think it might be interesting for someone looking for a base to do 650/660 (G)DDR OC comparison

 

the 660m can achieve more than 3k in 3dmark11 oced

the 650m in the rmbp scores also 3k+ in 3dmark11 oced

 

Cool Any detailed info on temps, etc.? Stability, how stable is OCed 650m vs 660m or vice versa? My Savage can do 180km/h..Great isn't it ?

 

You can't really compare temps since that's a function of the cooling ability of the laptop more than the heat output of the GPU. Similarly, all GPUs are different. Just because person X got +200MHz on his core doesn't mean you can, but on the other hand maybe you can get +250MHz. Usually the higher model GPUs are just higher binned. They are from the same silicon though. If you're lucky, you might get a very overclockable lower model GPU, but what you get isn't your decision.

 

That's all really clear to me.. but then what's the purpose of this topic?

 

The purpose of this topic was simply what's the difference between the GTX 660M and GT 650M GDDR5 models. I think the OP has his question answered. I answered your question by saying that you can't compare temperatures because they don't reflect the difference between the GPUs but rather the cooling ability of the laptops that you're comparing and that you can't compare stability (but you can test them equally with the same stress program).

 

So can the 650m in the NP6110: http://forum.notebookreview.com/sag...w110er-first-look-review-102.html#post8732274



P3269

 

that is one hell of a OC, I was going to revisit some books regardng the bandwidth influence to see how that really impacts on these cards. For sure its been quite a while that these mid range cards for mobile are bandwidth starved, I will try to see how much though

 

just testet my clevo170er scored p3126. gt650m 81degre. and here I gues there is a little more in it :thumbsup:

edit: maks p3300

so will go 24/7 1160/2800 giving p32xx in mark11 so nice

 

I feel the 650m (GDDR5) and 660m should be considered identical. Take the 650m in the rMBP, and it's 900mhz core, making it faster than the 660m.

Standard nVidia naming rubbish, nearly as bad as ATi's latest renaming where an 87xxM is the a rename of a 76xxM, it's now gone from x6xx to x7xx?????

I have a 2gb 650m GDDR5 in my M14x R2 and have it running at 900/1500, so a 50% RAM overclock and a decent boost on the core. Not actually benched it (might when I get home) but it runs Anno 2070 and Saints Row the third without issue.