clarenc3 11 Posted August 25, 2013 Hi all,I was wondering what PSUs people are running on their SLI systems? Is the official 170W really enough on full load and overclocked? Also, does anybody know what the connector type is called? I was thinking of getting a ~200W brick and using an adaptor to make it fit the Lenovo.Cheerio Quote Share this post Link to post Share on other sites
octiceps 256 Posted August 25, 2013 Hi all,I was wondering what PSUs people are running on their SLI systems? Is the official 170W really enough on full load and overclocked? Also, does anybody know what the connector type is called? I was thinking of getting a ~200W brick and using an adaptor to make it fit the Lenovo.CheerioI'm using the 170 W Lenovo adapter and it's been fine so far when overclocking and overvolting. Others who have the 750M SLI system have remarked that 170 W is not enough when overvolting that configuration so they bought Dell Alienware 240 W adapters from Amazon with a conversion cable to fit the plug on the Y500. You can get any number of Alienware bricks of different wattages such a 180 W, 240 W, and 330 W from Amazon, and it may be preferable to getting the official Lenovo one even if you don't need the extra power as the Alienwares tend to be slimmer and cheaper. The conversion cable can be found here: X75 Power Connector - 7.4 x 5.08mm Female Jack to 5.5 x 2.5mm Male Plug 1 Quote Share this post Link to post Share on other sites
peniku8 10 Posted August 26, 2013 It's working fine for me too, i overclocked my 650 GPU's by 100mhz and my ram by 200. Never had any problems Quote Share this post Link to post Share on other sites
CadetChristmas 10 Posted September 5, 2013 Hello! quick random post, thought it might fit here. I recently bought a second Ultrabay GT 650M, found a deal on Ebay that was too good to pass up. Might still be some left if anyone's interested, only $145! Anyway, I received a PA-1121-16 power adapter with my Y500, and it doesn't list the power output ANYwhere on it. Under output it reads 19.5V - 6.15A, and that's it. I'm thinking that I'll need a new adapter for SLI funtime, but I was wanting some sort of confirmation. So anyone with an SLI config and the proper adapter, could you possibly confirm? Thank you! Quote Share this post Link to post Share on other sites
octiceps 256 Posted September 6, 2013 Hello! quick random post, thought it might fit here. I recently bought a second Ultrabay GT 650M, found a deal on Ebay that was too good to pass up. Might still be some left if anyone's interested, only $145! Anyway, I received a PA-1121-16 power adapter with my Y500, and it doesn't list the power output ANYwhere on it. Under output it reads 19.5V - 6.15A, and that's it. I'm thinking that I'll need a new adapter for SLI funtime, but I was wanting some sort of confirmation. So anyone with an SLI config and the proper adapter, could you possibly confirm? Thank you!Watts = volts*amps. So 19.5V*6.15A = ~120W. You're gonna need a more powerful adapter for SLI. Quote Share this post Link to post Share on other sites
CadetChristmas 10 Posted September 7, 2013 Watts = volts*amps. So 19.5V*6.15A = ~120W. You're gonna need a more powerful adapter for SLI. Wow. DAMN. Thank you sir. I feel a little bit silly cause I'm sure I've covered that in physics but its been so long....yikes. I might have to take another class now so I stop feeling so dumb.Seriously, thank you for the reply and quick lesson! I'll be getting a bigger adapter straightaway. Haven't seen any on Lenovo's website, so I'll browse Ebay and try to find a good seller. Quote Share this post Link to post Share on other sites
octiceps 256 Posted September 9, 2013 Wow. DAMN. Thank you sir. I feel a little bit silly cause I'm sure I've covered that in physics but its been so long....yikes. I might have to take another class now so I stop feeling so dumb.Seriously, thank you for the reply and quick lesson! I'll be getting a bigger adapter straightaway. Haven't seen any on Lenovo's website, so I'll browse Ebay and try to find a good seller.This is the official Lenovo 170W charger from their website: IdeaPad 170W AC Adapter (UL) | Lenovo | (US)You can bring it under $70 (as well as get significant savings on anything else from the website) if you sign up for a free Barnes and Noble Gold account here: https://shop.lenovo.com/SEUILibrary/controller/e/barnesnoblegold/StdAffinityPortal/en_US/Lenovo:EnterStdAffinity?affinity=barnesnoblegoldOthers have decided to skip the overpriced and bulky Lenovo adapter altogether and buy an Alienware charger of sufficient wattage (180W or 240W) from Amazon: Amazon.com: dell alienware ac adapter: ElectronicsAnd use this converter cable to fit the DC jack on the Lenovo: X75 Power Connector - 7.4 x 5.08mm Female Jack to 5.5 x 2.5mm Male Plug 1 Quote Share this post Link to post Share on other sites
sagg1989 10 Posted September 9, 2013 when you make overclock the charger gets hot or not?? Quote Share this post Link to post Share on other sites
octiceps 256 Posted September 9, 2013 when you make overclock the charger gets hot or not??So that should be the new overclocking metric, how hot your laptop power brick gets. Nice... The charger gets hot when you game, just like every other one for every other laptop, overclocked or not. No I didn't try to measure any potential increase in surface temperature after overclocking. ROFL. As long as it's not running out of juice, that's all I care about. Quote Share this post Link to post Share on other sites
clarenc3 11 Posted September 11, 2013 Ended up finding a Lenovo W5xx series 170w adapter for a mere 30USD and decided to simply resolder the power cable on the brick board. Works fine and dandy, cheers guys! Quote Share this post Link to post Share on other sites
lukione 10 Posted September 12, 2013 Bought today some Acer 20V 7.9A supply, gonna check if it runs with 650m SLI config. Also found out that when battery is charging my GPUs are downclocking in Splinter Cell Blacklist, when set GPU to max performance it hangs with blue screen Quote Share this post Link to post Share on other sites
stranger 10 Posted September 12, 2013 Have 170 W PSU and 650M *2 SLI. Works fine, never overclocked Quote Share this post Link to post Share on other sites
rgrekejin 10 Posted October 1, 2013 I just recently bought a second 650M for my Y400. I've ordered the 170 W brick, but it hasn't arrived yet. I've got the second card swapped in to my laptop with the original 120 W brick at the moment, but my laptop doesn't even seem to recognize that the second card is there. It generates heat, so I know that it's turned on, but there aren't any SLI settings to be accessed in my nvidia control panel. So my question is - does the second card need the 170 watt brick to function at all? Is my problem going to be fixed with the 170 W brick, or is something else to issue here? Quote Share this post Link to post Share on other sites
imwwy888 10 Posted October 29, 2013 Y510p come with 170w PSU as standard, run fine with SLI Quote Share this post Link to post Share on other sites
octiceps 256 Posted October 30, 2013 Y510p come with 170w PSU as standard, run fine with SLIOnly the SLI models come with 170 W. The single-GPU models come with 120 W. Quote Share this post Link to post Share on other sites
