octiceps

Picture of the 750m ultra bay redid the thermal paste..

[ATTACH=CONFIG]7235[/ATTACH]

Did the repaste help? What is your max Ultrabay temperature now?

I think it might not work since already experience combining difference Nvidia GPU but same series,but it failed lol,but this one it got same Core if Im not mistaken o.o

Nvidia is finicky about combining different model GPU's unlike AMD. I have a hard time believing it would work.

Hmmm. Yeah, I saw that you got that deal in the other forums. I paid $1100 all together for Y500 w/ burner + 120w, extra GT650m, and 170w adapter. I feel alright with that as everything was deeply discounted when I bought, and I didn't get a lemon, it's just them dicking around that's making me annoyed.

I'm after the 21 days I suppose, but if I were really adamant I'm sure I could talk them into it. I should just sit back and forget about it and enjoy my machine, lol.

Where are you located? Did you need to pay taxes on in that price?

Just be happy with what you have.

Yeah I live in California and had to pay like $80 of tax. Buying from Amazon would've been the same since they charge tax here and Lenovo's prices were way cheaper.

At this point I think we can safely assume with 99% certainty that the GT 750M in the updated Y400 and Y500 is the same GK107 core with voltage and clock speed boosts. I'm perfectly happy with my 650M SLI system and I got a screaming deal on it. 959 USD for everything in the sig. I haven't had time to overclock this puppy properly yet but I'm sure it can meet or surpass the stock 750M performance and with an overvolt they're essentially even. I'm actually glad I have the older model because there's a lot more support for it out there such as svl7's wonderful BIOS mods and the ability to use the latest Nvidia drivers none of which you have if you get the updated model.

You can certainly return your current machine if you're unhappy with it and it's within the 21 days. I think after 21 days you have to pay a 15% restocking fee or they won't accept returns, can't remember which.

Overclocking and overvolting are about all you can do. The 650M can already surpass the 660M if you raise the clocks enough. They use the same GK107 core. Anything higher in the mobile Kepler range uses different cores so what you're asking is completely out of the question.

I'm new and have a question, is this going to stop the throttling of the y400 on battery?

No. 10char.

I dont very much like windows 8, I use windows 7 explorer to disable the metro ui and bring back the windows 7 start button. I wouldnt go back to windows 7 though because Windows 8 uses almost half the resource, Just modify windows 8 if you dont like the style.

What is "windows 7 explorer to disable the metro ui and bring back the windows 7 start button?" I have never heard of that program. If you're referring to ex7forw8 that has been deprecated and StartIsBack is the (much better) replacement. They were both made by the same author.

I stuck with Windows 8. I'm using StarIsBack and that cured all my headaches with the new UI. I've had no software and driver incompatibilities; everything that worked in Windows 7 previously is still working fine in Windows 8. Navigating around the OS definitely feels a little snappier overall than Windows 7 and the thing boots like it's on an SSD LOL even though I have slow-ass 5400 RPM HDD. Seriously the fastest Windows boot I ever seen. I have not done head-to-head benchmarks but gaming performance feels similar to Windows 7, if not a little better since the OS footprint is lighter.

Temps are fine. Don't worry about it.

Actually you can over- and undervolt that card not only per vbios but also per software. (TrixX). I run that card at almost 1Ghz.

But back to topic, lol.

I remember reading about that during the time I had the ASUS, but it was always people with other machines, e.g. Alienwares and MSI's, that were able to successfully overvolt their 5870 using Sapphire TriXX. As far as I know the ASUS board had a hard lock, at least that's what the ASUS reps on the forums always said, and since nobody ever did succeed with the G73Jh I never questioned that.

But I digress. Bygones are bygones.

Everything went splendidly You're the man svl7.

So...took a tour of the new BIOS and was just wondering what the TC1 and TC2 settings do if the values are changed? I know better than to change random settings, so, I'm just asking if anyone knows for sure. Because I saw the word 'throttle' in the description...and I really hate that word. I ran ThrottleStop and both cores stayed at 100%, so I don't think it was throttling at all. But if those settings disable it for good then I'd be willing to do it, if anyone knows about them. There was one other setting that looked like it was asking to be changed, but I forgot what it's called now. Would have to do a restart to look again.

Basically just wondering if there's a guide to the unlocked BIOS settings. Either way, thanks again svl!

Read my reply to you here and don't mess with anything.

- - - Updated - - -

Yeah, well you don't see it with Nvidia... with AMD you can, e.g. 7970m is adjustable per software.

Thanks for the info; I didn't know that. The last AMD mobile GPU I owned was the Mobility 5870 in my former ASUS G73Jh. The maximum voltage on that thing was hardlocked but you could undervolt with BIOS mods.

FYI,

Sent a pm to svl7 with my bios to take a look at when he has time and thanks in advanced.

Also this is what my nvidia inspector looks like.

[ATTACH=CONFIG]7197[/ATTACH]

Though sliding the voltage around and applying didn't seem to change what the voltage was registering.

It was at 1.118v the whole time, when I overclocked it by 135mhz it jumped to 1.125v but never beyond that no matter what I did with the voltage slider.

Also the Priorize Temperature feature worked moving the slider around and applying it would cause the fan mhz and voltage to throttle down/up to maintain that temp with in around 1C variation.

I used furmark to simulate load and since base clock offset and temp setting and memory clock worked in real time (can apply and settings take effect immediately) the voltage settings should as well if it worked so I have to assume it isn't actually doing anything.

I figured it probably didn't do anything. You never see software voltage control on mobile GPU's. vBIOS flashing is pretty much the only way to go about it.

Yeah you should verify whether the voltage slider in Nvidia Inspector is actually doing anything. It's completely grayed out for me.

Thank you very much. I seem to have overclocked without the flash though. I don't know if my posts are going to pop up eventually or not, seems like a mod keeps deleting them (they have to be reviewed since I have less than 5). But yeah I just ran 1000mhz core 3dMark11 run and I haven't flashed anything yet. How is that? Is it because I'm using the 310.99 drivers and in order to overclock like this with the 320.00's I have to do the flash in the OP?

Yeah if you have fewer than 5 posts your posts will be reviewed before they appear hence the delay.

We know about using .bat files with Nvidia Inspector and that is how everyone overclocked before this modded BIOS was available. The problem with that method is you are limited to +135 on any drivers after 310.90 and as of 320.00 BETA that has not changed yet. Obviously using such old drivers to play any of the newest games is not feasible since optimizations and SLI profiles for them are missing. The modded BIOS and vBIOS allow you to overclock past the +135 MHz core limit on any driver version and also makes the overclocking process much easier since you can simply use something like MSI Afterburner and move the sliders instead of having to create custom batch files with Nvidia Inspector. If you read Mobius 1's thread on NBR where this method originated from you'll see he explicitly wrote that you should check for a BIOS/vBIOS mod before using that method.

Also, you shouldn't overclock in P5 as the core voltage is lower than in P0 and this will limit how high your core can go. P0 is the highest performance state and this is where you will get the best results.

The option for this is in the BIOS? I have practically nothing in mine, but I still have the one it came with on here. I'm waiting until my post count goes up so I can download the attachments. But yeah is that option to adjust what temp the fan kicks in in the modded 2.02 BIOS but not the original one?

Yeah the stock BIOS is very locked down. The modded one unlocks all the hidden menu options that aren't there originally. I don't actually know if there is anything in there that will allow you to control fan speeds. But there are a ton of thermal and power management settings and some of them do seem like they would do the trick.

I have no need to adjust the fan speeds so I have not messed around in the BIOS and don't intend to. The last time I did, I unwittingly disabled one of the USB ports and thought for the longest time that the port was broken. It was only after resetting the BIOS settings to default that my USB port came back.

Even though I consider myself to be relatively computer-savvy I would not tweak any BIOS settings I am not familiar with. A lot of them have arcane names and some don't do anything or could make your system unbootable if adjusted incorrectly. The only three settings I have changed are enabling the always-on USB port, enabling deep S3 function, and disabling BD PROCHOT. The first two settings are already in the stock BIOS and the last one is only available in the modded one. Deep S3 is a deeper sleep state that reduces battery discharge when on DC power. BD PROCHOT throttles the CPU when the system detects that the GPU is running too hot but in my experience this machine doesn't actually use this throttling mechanism so this setting doesn't really matter. Basically, I have found no settings in the unlocked menus that need to be changed from default.

@dph314 The V2.02 BIOS mod flashes the BIOS and the vBIOS of the internal GPU. If you have SLI the vBIOS of the Ultrabay GPU needs to be flashed separately using NVFLASH. Just follow the instructions in the OP to the letter and you'll get it.

@NotListed How did you "play with voltage?" As far as I know GPU voltage control has not been unlocked yet. Increasing voltage does nothing for increasing VRAM overclocking headroom, just the core. I'm not surprised you can't push the memory much further because it is already 500 MHz higher than the 650M and if they are using the same quality VRAM chips then they've already used up most of the OC headroom at the factory. The reason you are not getting around 7600 Physics score every time is that you are not using ThrottleStop.

To get a dump of your system BIOS use the fptw64.exe tool and follow the instructions in the OP for making the BIOS backup and send it to svl7. Additionally, if you have 750M SLI then follow the instructions in this guide to get a vBIOS dump from the Ultrabay GPU as well.

What exactly was the issue with the clocks?

After flashing the modded BIOs and vBIOS, the default core clock changed from 790 MHz to 835 MHz even though it did not actually increase. So now the number is always reported as 45 MHz higher than what it actually is. For instance, if I overclocked my core by 100 MHz to 890 MHz, GPU-Z and Nvidia Inspector will say 935 (890+45) instead. Anything that reads the core clock from the sensor, however, is still correct. This bug is present on both the internal and Ultrabay GPU.

Before:

After:

However, the sensor readings are still correct:

Hey @svl7 just wanted to give another big THANK YOU for your continued support of this machine and I think I'm not alone in expressing my appreciation for your fine work.

It seems you have been busy with other stuff lately and not as active in this thread, so I'm wondering what is in the works or planned for this machine. I know that people are starting to receive their Y400/Y500 with the refreshed GPU so that will probably get modded for whitelist removal and unlocked OC limit. Also, there were requests for a volt mod and I have been asking about a fix for the incorrect reporting of the GPU core clock.

If you could possibly update us on how things are going that would be great. Cheers.

I haven't had real time to sit down tweak and play with my Y400 yet (working long hours and even at work right now as I speak)

I have only made one modification to my laptop. I replaced stock memory with Kingsont Hyperx 2133 ddr3 sticks (still 8gb) so I don't know how much that will skew my results. I've made no software modifications or driver updates.

This is stock clock speeds

P2932

NVIDIA GeForce GT 750M video card benchmark result - Intel Core i7-3630QM Processor,LENOVO INVALID score: P2932 3DMarks

This is with 135mhz + to gpu clock and no change to the 2500mhz dd5 speed

P3227

NVIDIA GeForce GT 750M video card benchmark result - Intel Core i7-3630QM Processor,LENOVO INVALID score: P3227 3DMarks

If I got newer drivers on there, tweaked the memory speed and I'm sure I could bring these numbers up some more.

svl7, do you know if this unlock bios and whitelist mode will work for my version of the Y400?

That 750M is plenty fast. Us 650M owners are seeing similar results at our highest overclocks. Just wondering, is adding 135 MHz to the core 100% stable in games as well, or just in 3DMark 11?

If the uber RAM is helping it's not showing in the 3DMark score. Your Physics score should be 7600 but it's probably because you're not using ThrottleStop.

Have you checked that the machine is actually running those sticks at 2133 MHz? I wonder if it's plug-and-play and if you had to change some BIOS settings or overclock anything.

Yeah, I figured so much, I just suggested monitor what the program does in order to change the fan speed.

OK thanks for the clarification.

this setting doesnt make the fan go into the same fan speed as the dust removal app provided by lenovo

I don't think there's an easy way to make the fan go that fast, at least not as it's programmed by default. It doesn't get that loud even when my CPU is approaching thermal shutdown which, in theory, should make it go 100%. Doing the dust removal procedure makes it sound like a jet taking off and the fan is probably going in reverse as well.

Dust removal app? If that thing controls the fan you could try and monitor the EC registers while using it and see whether you can somehow figure out what it does to control the fan speed.

@svl7 the dust removal feature is part of a pre-installed program called Lenovo Energy Management which lets you change power profiles and such. Performing the dust removal process simply cycles the fans at high speed for a few minutes, although in my experience it's nowhere as effective as using a can of compressed air. There are no actual fan controls in the program.

Some people says gt750m ddr3 is faster than gt 750m gddr5 version. Is that true?

In most sites tests performed on ddr3 version instead of gddr5.

I think We have to wait to see how much real potential difference between past 650M. And present 750M

Sent from my Nexus 4 using Tapatalk 2

Of course not. GDDR5 has twice the memory bandwidth of GDDR3 at the same clock speed.

i have already flashed to the modded 2.02 bios for overclocking purposes.. where in the bios options would i be able to find the fan speeds.. i believe i tried seeting them to 100% before but it does not make the fan spin as fast as the dust removal app

I believe there's a section where you can specify which temperatures the fan kicks in and such. Lowering it should do the trick.

just wondering if anyone has figured out a way to control the fan speed of the ideapad y500. .. using the Energy Management Dust Removal tool provided by lenovo i noticed the fan speed fan push quite a bit of air out. i would like to be able to control this and actually have the fans running at these speeds despite the noise.

i've tried speedfan but that didnt do nothing. anyone know of a way to do this?

In the (unlocked) BIOS. Check the sticky at the top of the subforum. No software is gonna work. Remember this is a laptop.

NVIDIA GeForce GT 750M - NotebookCheck.net Tech vs NVIDIA GeForce GT 650M - NotebookCheck.net Tech Kepler core both.

(Nvidia earlier used same chip in some product just rename it and voila new VGA)

I've seen that, but seriously you would take Notebookcheck over AnandTech? Notebookcheck can't even get the specifications right post-release let alone pre-release. Case in point: They still list the GTX 660M at GT 650M speeds (835/2000), even though like 99% of OEM's clock them higher than that, typically 900-950/2500.

I wouldn't automatically assume a rebadge of the same GPU at this point in time. The AnandTech article made it very clear that we will be seeing some new derivative parts in addition to reused ones in the 700M series. For example, the GTX 760M is rumored to be a 768-core GK106 and then there's the case of GK208 at the low-end. If this is true then the GT 750M could very well be GK106 as well since this was the case previously with the 660M and 650M using the same core.