Search the Community
Showing results for tags 'psu'.
Found 9 results
Laptop overclock and PSU
Solaire posted a topic in General Notebook DiscussionsHello everyone, some time by now I flashed a custom Vbios (thank you Klem) on an Acer Predator 15 G9-591 and I started doing some tests about how far I could go overclocking the gtx 970m without running too hot. With the voltage up to 1150mV and something like 300 additional MHz for the core clock, in the strongest stress condition for both Gpu and Cpu ( i7-6700hq undervolted), the Gpu reaches a max temp of 85C (with some 86 spikes but never more than that). Considering that soon I'm going to relid both Cpu and Gpu and clean everything in the internals (laptop is 4 years old) I think I'm going to have some additional heatroom. I've already tested some further overclocking and I noticed that even if the temperatures remains under 93C (which is just for testing purposes, but after relidding temps could be nicer) graphical glitches occur and after some time most games crash. But my question is, could it be because of lack of power supply? The laptop charger provides 180W Could there be an increase in overclock margins with a 230W psu or something like that? (Obviously with the same 19.5V output) If anybody tried something like that on any laptop model, or knows the matter, I'd like to know
W540 + gtx 970 + suggestion for psu and setup
zepvalue posted a topic in DIY e-GPU ProjectsHello guys, Thanks for this incredible forum, I hope I will learn a lot from the gurus ! I am trying to make my eGpu MSI GT X970 work on my laptop with K1100M integrated GPU. This are my specs: CPU: 2.7GHz Intel Core i7-4800MQ (quad-core, 6MB cache, up to 3.7GHz with Turbo Boost) PSU : ??? Graphics: NVIDIA Quadro K1100M / Intel HD Graphics 4600 RAM: 32 GB Storage: 1TB I got a V8.0 EXP GDC Laptop External Independent Video Card Dock with the express card version ( I am not really hw savy) and I am looking for a good psu to power my MSI GTX 970 4G Could you kindly suggest a good PSU that i could use to power this GPU ? I am also willing to do as many experiments needed Thanks for reading my post -zepvalue
G73JH CPU/GPU Upgrade Help
cclecle2000 posted a topic in ASUS Gaming Notebook ForumHi, I am trying to do the "Ultimate" G73jh upgrade and I have power related issues. So I have the most "basic" G73jh, with i5-430m and 5870m. This version is the one with the brown MB, with only 2 memory slots. What I did: - Opening the whole laptop - Swapping 5970m to 7970m - Blind-Flashing 7970m vBios - It boot ! But GPU/RAM frequency stay at 450/300 maximum, because of my 120W PSU I think (throttle), So I ordered a 240W One - Swapping i5-430m to i7-920XM - It boot but I almost didnt use it because I was affraid of my weak PSU (dont want to burn it !) Then I received my new PSU, from ebay ( http://www.ebay.fr/itm/201638674476). And... Nothing change !! My 7970m is stil throttling. And I cant OC the 920XM, if I go over 70W TDP, the G73 instent shutdown :-/. I need your help to be sure Its a PSU related issue, and not something else, like my mobo etc. I dont want to buy a 100+€ PSU if this is not the problem. As my G73 is still out of his case, I manage to solder the PSU wire directly on the MB, and then I measured voltage during full load (prime95). IDLE 19,4-19,5V LOADED: 19,3-19,4V Not that bad ! I am very confused because the PSU seams to work. I have no oscilloscope to watch the signal in real-time... For sure it is not a real DELL but if voltage is not droping, whats wrong ? Its very frustrating to know that everything work but can't be "feeded" with Amps ! Any ideas ? EDIT: All temps are OK ! Furmark : 58° GPU... (because of the low Freq :-/ ) EDIT2: new info: I tried on battery, It is the same, is it a common behavioor ? (My battery is almost dead, only 30% capacity) EDIT3: Do you know if the "metalic" part of the case (under the keyboard) have somthing to do with the power delivery in the mobo ? EDIT4: I reassemble the laptop, so no, the metal plane have nothing to do with ground...
Hi guys, I'm new to this forum, Mac world and also to eGPU world! So I decided the better thing to do is to put my hands right into the mud.. I purchased an used, original Akitio, a Palit GTX970 JetStream and a cheap Micro ATX PSU (Vultech GS500M) - My pc is a mid 2014 MacBook Retina with Windows 10 and Sierra (I5 2.6 GHz, 8Gb RAM, Intel Iris 5100, 256Gb SSD). First thing first, I prepared the PSU to power all the things. The datasheet says it is a 500w, with two 12v rails, 29A total (348w). I cut all the connectors, isolated the other lines I won't use (3.3, 5v, 5vsb and -12v), shorted the power on with a negative. Then I had six 12v positives, and all the commons. I gathered 4 wires and solder them to the positive of the two PCI 6 pin cables, same I did for the negatives, except two. I used the remaining wires (2 positives and 2 negatives) to make the barrel connection for the akitio. Tested without anything plugged, it works (fan spinning) Then I build a plexiglass enclosure to contain everything, i kept the layout of the original metal case, so the position of the board is the same; next to the video card, on the opposite wall I planned to install the psu, with the air intake obvously facing the outside, and the air output in the rear. In the front I installed a 120mm fan, plugged into the fan port of the Akitio board. I partially assembled all the parts, leaving the top and the right side (opposite to the board, to be clear), and power on. Surprisingly, nothing blew up... I managed to make the card recognized by Windows, installed the drivers, AND make some gaming - benchmark test to test the setup. I made a short session of Farming Simulator 2015 and suddenly nothing wrong .. BUT .. after some minutes the PSU started to buzz. The more the card required power (by doing some "complex" tasks), the more PSU buzzed. I also tested with Unigine Valley, in ultra setup. Everything worked, I made two benchmarks, I reached 85°C on the GPU and 96° (WOW..) on the CPU.. And now.. my concerns.. - is the PSU buzzing just because is sh*tty? Or I made some terrible mistake by wiring, soldering and so? I took a look inside it and TBH.. even if I don't know electronics so deep to reverse engineering I noticed that 12v wires come ALL from the same pad on the pcb.. so I guess it's not a problem to put them together. If the power table is correct .. I should get nearly 350 w from the 12v line .. during the benchs I logged the power consumption with HWINFO, and the 970 drew about 120w on its peak .. if summed with the Akitio I get less then 200w .. far more behind the limit.. - the temperatures .. ok 85° in full load would not scare me if the GTX was inside my good old desktop gaming rig .. but here I think the game is different, is there any risk to "cook" the Akitio Board? The space between the card and the board is really low (I'm not using a riser), I'm thinking about improving the ventilation by drilling many holes in the wall very next to the board, and maybe installing a more efficient fan connected directly to the 12v. Would it be ok? - the riser .. TBH I don't really know if I need the riser or not. By now the card is plugged directly into the Akitio Board, powered by the buzzing PSU, that also power the board. Everything works even if the mentioned troubles above. Any kind of suggestion is accepted, last things to say, I'm quite able to solder and etcetera. I own also a Dell DA2, but I preferred to make an "everything integrated" solution and last but not least .. JetStream GTX970 on review peaked quite 200w itself. I need more power, I guess. Ok I'm risking to be lynched .. but just to know .. I decided to mod directly the PSU by following a guide taken on the web .. stupid or not it's not my invention I attach a pic of the connection I made, of the PSU board and the power table Here are some pics of my setup .. on idle and with low gpu load it's running fine, no buzz BUT no load .. tested again Unigine and here are the results (AGAIN the psu is buzzing). Respect to the post I modified the case by drilling holes behind the Akitio Board, drilling the psu case, and most important, I dressed the power wires of the akitio board with a silicone-fiberglass sheath to protect it from the heat produced by the gpu. Again, thanks.. any hint would be appreciated.
125 Watt Power Supply for Akitio Thunder2
wmjnottriell posted a topic in Apple eGPU discussionOk, so for the past few weeks adter a lot of trial, error and studying up on sites like this, I've been running my Akitio thunder2 chassis with a Nvidia Geoforce GTX 750ti sc in it WITH THE INCLUDED 60WATT AC ADAPTER. Everything was working ok as long as I opened precisionx 16 and ran the card at about 92% power but i would only get about 30-40 fps, when i run it at 100% or crank up the mhz a little bit i get well over 60fps but the card eventually crashes and I get a kernal error. Anyways...to get to the point, I was doing this all on my 2015 retina macbook pro i5, and a few days ago I sold it and used the money to buy a 2011 quadcore mac mini i7 with 16gb of ram (suprisingly much faster and I only paid $600 while I sold the macbook for $950) except for the switch from thunderbolt 2 (on the macbook pro) to thunderbolt 1 (on the mac mini) but I haven't noticed a difference with any kind of bottlenecking or anything yet. Probably because it's only a 2gb gpu. Ok, so when i was out buying the monitor (I went with an acer 23.8 inch) I also bought an asus "pa-1121-28" 125 watt power supply. When i plug this thing in and boot up with my same method it gives me a blue screen with "systerm_service_exception nvlddmkm.sys" before anyone says there's a fix for that, trust me, I already did the driver fix and it didn't work haha, also..like I said, when I plug the 60 watt power supply in, everything works fine. If there was just some way to boot up windows with the 60 watt power supply and then without windows noticing, swap out the 125 watt one everything would probably work fine. I just have no idea what to do or what's going on...why doesn't windows like this psu!? It has a barrel plug just like the included power supply. Any help would be appreciated.By the way, the fan on the gpu spins either much faster or (when it seems to be syncing with the computer) a little bit faster right off of the bat.thanks guys!,BillyEdit: I'm running windows 8.1 pro
(E)GPU is running a low voltage (EVGA 750 ti SC)
wmjnottriell posted a topic in NVIDIA Video CardsI have a I'm Running Windows 10 pro on..... 2011 2.4GHz i7 quadcore Mac Mini with 16GB ram Akitio Thunder2 pcie chassis with a EVGA gtx 750 ti SC (2gb) running over thunderbolt 1 400 watt continuous power EVGA psu with a barrel plug spliced onto an 8pin connector (4 yellow 12v) (4 black grounds) with paperclip trick applied Ok so I have a few different hardware monitoring apps and they all say that my 750 ti is running at .962 volts. That seems to low to me. I even successfully flashed the bios by following this tutorial http://cryptomining-blog.com/1014-how-to-increase-the-geforce-gtx-750-ti-power-target-limit/ I've played around with Msi Afterburner and PrecisionX 16 and nothing helps. I feel like the voltage being so low is the main reason why my gpu is very unpredictable and jumps frame rates like crazy. it will be running for example tom clancy's ranbow 6 siege on everything high @1920 getting over 60fps and then i'll start it up again and it'll be 8fps or something. I just don't know what to do. Any help would be appreciated, Thanks, Bill
I am dabbling in overclocking, and I am reaching the maximum of what my 180w Power brick can provide. My internal components are i7-3720, GTX 680M, Samsung 840EVO, 750GB Momentus HDD I have searched, and cannot seem to find any power bricks above 180w. So, I am curious in regards to the possibility of splicing a higher wattage (220w?) PSU to the plug of my current 180w, 1) if this is even feasible, and 2) If this is a terrible idea than could cause damage to my laptop. Additionally, I would be greatly appreciative if anybody knows about a source for power supplies that run in the range of 220+ watts, and would be willing to share the aforementioned source with me. _________________________________________________________________________________________________ Additionally, if anybody has done any aftermarket modifications to their GT70 to improve cooling performance, or any laptop for that matter, I would love to see, as I am hoping to do something of the sort to my laptop as well. Any and all help would be greatly appreciated. -Emma
Buzzing/Electrical Noise Corsair AX1200i PSU
Brian posted a topic in General Desktops DiscussionJust finished setting it up last night and it was working great. This morning it keeps making this intermittent coil noise. If i had to describe it, its this electrical sounding noise. I have 6 fans in my system (2 SP120, 2 AF120 + 2 C70 fans) and I can hear this thing over all of them! Bought it from NewEgg and just filed for an RMA but I want to know if this is a known issue and if anyone else here has experienced a similar problem? BTW my old HX850 doesn't have this issue. Here's a cell phone video I made:
Recommendatios for CPU/Motherboard/RAM/PSU
StamatisX posted a topic in General Desktops DiscussionOk guys and girls, my Alienware laptop got fried today so I am left without a computer and since I am out of the desktop game for a long time now I need your assistance to build one. What I need to get is: CPU, Motherboard, RAM and PSU. My budget for those is €1300. Based on the CPU I would like to hear your suggestions: 1st option i7 4770K (€310) 2nd option i7 4930K (€540) RAM can be between 8-16 GB (preferably 2 modules for the 16GB) DDR3 1866 or more. (no more than €200) PSU I was thinking Corsair AX Series 1200i Digital (€325) (or should I go with the cheaper professional series?) Motherboard I was thinking about Asus Rampage IV Gene if I go with with the 2nd CPU option, so I am up to suggestions (up to €320) About CPU cooling I believe a Corsair H100i (€110) will suffice. Thanks again for your suggestions.