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ghoul

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  1. Larger diameter. Maybe it can fit as well, but it will be louder, like the one in ultrabay, fan is too close to shroud.
  2. Ultrabay fan is weak even at max speed, but, you can fit original main fan to ultrabay, lower pitch than y500 fan, which is stronger by the way, but it is still enough for 1 gpu, and noise is less. I think it held very well, regarding the size of heatsink, and vrm overload, but that is out if its league. 47W but larger cpu could work, since under gaming load, it can boost up to 4930 speeds, but under heavy load, tdp will keep it cool ( compared to 57W) I bought is from local marketplace, it was around 200EUR, and sold it around 170... ebay is waaaay overpriced. 4200m was arround 40EUR... a 4340m slipped out of my hand, and that was even a bit cheaper. that would have been the perfect cpu for me. Max temps will be only lower if you increase disspipation space on other side of pipe, like larger fins, increased airflow, lowered ambient temps. And of ocurse, @skavi use CLU, and with that less is not always the better, apply it to chip and heatsink as well, and increase pressure on chip via washers. I don't have to mention, when using clu, insulate smds beside the chip, do I?
  3. @TheReciever First of all forget 4.5 even large AW machines are unable to run them at that speed, heat and power is too much. 4.2 with AW, but never gonna happen in this machine for multiple reasons. First of all 4910MQ is 47W cpu. 4930MX's deafult IA max current is 95A and Lenovo bios sets it 86 if i remember correctly. Evven with unlocked bios, tried to increase it, but nothing happened. So did the cTDP failed to work, no matter, how i set it in bios, MSR as set according, and XTU was able to read those settings, but throttling occured way before that, porbably,because of current limit, which is programmed by EC after bios init, so those settings are overwritten. With undervoltin, was able to run Throttlestop bench @57W TDP throttling, cpu speed was hovering between 37 and 38 multi. Don't expect more from Lenovo, and with 47W cpu, it will be even lower. With more current usage,like AVX load, speeds where down as 3.0 with 4700MQ, didn't tried that with 4930mx, probably you will understand why Lenovo repair manual for motherboard states clear, 47W cpu max, use cooling on vrm, and expect it to fail over time And remove battery, when you tempering around VRM, those are under power ,and risking shortage( been there, done that... tried to move thermal pad over with screwdriver, motherboard almost died, had to repair it) What spacer are you trying to remove? If you want more pressure on chip, use washer mod, copper shim will introduce another layer of thermal interface between chip and heatsink. Regarding extra heatsink... For heatplate( let's call it that), as you can see, you can add copper sink, but, this is a two sided weapon. You will gain, for being more thermally capacitive( English not my native, excuse me if it is unenglish ), and heat from chip will be absorbed by copper heatsink as well, delaying temp increase nad flattening down heatspikes. But, downside is, the are dissipating to chassi, so eventually, when final temps are equalized, temps will be as high as without them. Cooling down will be slowed as well, so only reason to use them is for this. But, putting those on heatpipe in the chassis, will make it even worse, because it will downgrade the efficiency of heatpipe, since not all heat will absorb outside the chassis, but part of it inside. Strongly unadvised. Cutting chassis,so fan will be able to breath more fresh cold air is a better approach. But don't forget, VRM will be hotter,since airflow over it will be lower. Those outside sucker are as good to practice throwing to dumpster. Use brown wire cut switch, and it will force fans to run at max speed. Sata can be connected via flexy cable, so 1 m.2 and 2 sata devices can be inserted, if you strip sata ssds, 2 can fit on top of each other at original location. Almost forgot, fan is XN0G5 part number , AW m14 R2 fan. 4 pins inner two pins have to be switched, and that's it. Edit, did forgot something: Even with original 4700mq downvolted, inner power cable at motherboard side was almost burned. Switched out, but when used with 4930mx motherboard pins became so hot it occured after two weeks or so. If you want to use it for folding, replace power cable and solder it onto motherboard. I used 2.5 mm2 speaker cables, which was a pain in the ass to route under left speaker, and getting motherboard out became harder as well.
  4. @Tesla That's why I reconsidered my opinion about, if is it a mod,or not. However, for most of us, who use it as a notebook, it is unusable. There are plenty of mods, which can be done to maintain lower temps, keeping the device usable as a portable one like chassis cut, dust filter remove, CLU repaste, heatsink retention washer mod, fan replace mod, fan speed switch mod. Personally i think downclocking anything below rated speed should not be a solution for engineering mistakes. Yes, it was a very funny experience, hence larger notebooks struggle to run that little inferno too. Since cTDP is not working, even to lower below rated TDP, so I say, don't do it, use a 47W cpu like 4800MQ, since VRM is running on ( over) the edge with 57W, so do the cooling. I'm not sad, I use it very rarely for gaming nowadays, so silent and cool browsing, general usage is more important for me than raw speed.
  5. @Tesla You don't need to be sorry, no harm was done,just wanted to point it out, that's all. As a matter of fact, removing keyboard is more of a mod, than a repaste job or downclocking. TP was meant to be used, so if we want to be correct, not using it should count as one, even if it wouldn't be effective (like a removed keyboard ) Thanks, and it is just a 6.4CFM fan, and there is one in this size with around 11CFM, now that should do the job properly (with a plane taking off like sound) And if you want a small desktop, build an ITX machine, maybe with a huge passive heatsink Before someone asks for 4930MX benches, a had to sell that cpu, currently running an i5 4200M, stressing it is around 60C with fan barely ramping up to audible speed.
  6. This is not a mod, this is just underclock. Title couldn't be more misleading.... Let me show you a real mod: Cut out original fan Cut out AW fan, and glue it into original fan shroud Other side: Valley stress test: Valley + TS bench No laptop cooler,or anything, just slightly elevated chassis With this, been able to use 4930MX@4Ghz for gaming...
  7. Disassemble laptop, remove cpu from socket, reassemble and bios will reset itself.
  8. Hey, Not really,because i rarely push HW that far,and by default i use undervolt on cpu/gpu even under oc. But it can happen easily, if you overvolt gpu-s and cpu is overclocked, not to mention, with 58W cpu it can be easliy reproduced, and i read about this somewhere, but that was with different modell. When tried once 1.3G gpu clock with 1.2V on gpu-s with original 170W psu, overcurrent was tripped sometimes, but probably it drained battery at that time as well. You can try larger dell psu, or parallel 2x 120W or another 170W lenovo one. However, be really careful, and check internal DC cable connection on motherboard side, because now for me the second one got burned. ( 58W cpu is not really supported, despite it works fine, first was burned with 4700mq ) Pin is ok on motherboard side, solder seems ok, but the female pin in connector gets really hot, and burns plastic around. Easy fix is ( wich i did already) is to direct solder a thicker cable, but notice, there is very little place left to route cable under speaker.
  9. These are my only voltages, i use them for games as well. Tried ROTR, it was stable. Could run valley with even lower voltages on ultrabay, but to be game stable it had to be raised to 1.05V. Every chip is different, mine does lower volts than yours, but for exchange, memory oc is crap. Beyond +100 it is doing texture errors. Nothing guarantees that,even if they are the same ASIC quailty, if mine does certain speed at a voltage, yours can too,
  10. dupe
  11. Means default voltage for chip set by nvidia. Because there you can test cards one by one, and one doesn't affect others stability.
  12. Becasue those are the fused ones, before modded bios. Of course, after modded bios, everyone will have 1.1V, unless you extract bios files ( 1 for sli, 1 for optimus) and mod voltages further. Regarding stability at certain voltage, every gpu is unique, respond different at different voltage levels, guess i was lucky with mine. Test them out one by one, don't use sli for undervolt testing.
  13. Scroll up a bit, you can find almost all the answers there. For the lazy ones: Yes, both fan was upgraded. No,because GPU load matters more,than saturating memory bus and GPU is waiting for that. Ambient was around 24C. Temps under game depends on the game, this is why i choosed this test, because it can be easily reproduced, hence comparable. Asics: 84.6 Internal, 76,6 ultrabay. Driver was upgraded since then to latest, so i dont know, but don't think it matters at all, unless you use ancient drivers. Temps nowadays skyrocketing, so does cpu speed, switched to 4930MX, GTA5 can be played @4GHz, with thermals 90C +/-2C top ( depends on core), gpus are chilling, since fan speed is higher because of cpu temp Synthetic test is forgettable, if I want keep machine alive, but gaming is fine, so it is ok.
  14. @Bobbey: Doesn't get that hot? What's the difference between 750m and 755m? First the memory is running higher, 750M uses 1250Mhz binned Hynix with 1.5V voltage. 755M uses 1500Mhz binned same Hynix with same 1.5V running @1350Mhz. Thermal differences between the two is close to none. Mine is running only 1300Mhz, gpu is ok,but memory is shitty like hell. 750M runs @1058Mhz boost clock, 755M runs at 1097Mhz. The gpu voltage is based on leakage( ASIC quality), and you can get a 750m which runs at higher voltage than 755m. Thermals between few watts only. And limited by TDP as well, mine has like over 100W/gpu in bios( actual is way lower of course ) Please note, my gpus have 1.05 and 1.08 voltage as default, running at 1.0 and 1.05 , so gpus are undervolted, and besides that, overclocked beyond 755m speed. Cpu is overclocked with the 2 extra bins, which is present in 4700mq, and undervolted via -85mV and -50mV cache. Memory is faster than stock 1600Mhz, they are running at 1866. So if you had instability, that has nothing to do about being a 755m modell and running things at default speeds could be done with even better temps. Simply you have undervolted too much,because of thermal reasons, and/or you are not able to undervolt more, but cooling can not cope with heat. This is what this and previous hw mods are done for, so you can use the performance present in the hw, and don't have to do underclock, which is unacceptable for me. If you are using underclock for like longer battery life, that is ok, I can accept that, but to do it, because cooling is messed by lenovo, well..., not so much. Lucky for me, i could do a workaround for their mistakes and now happy with my laptop, more than ever.
  15. Thanks, pictures has been uploaded to local forum, here: http://prohardver.hu/tema/lenovo_ideapad_y400_y500/hsz_14270-14270.html