860m is a Beast

+7000 is very impressive! That is up with current gen high end mobile cards!

I might just get a midrange card next because clearly if this card were 20nm it would outperform the 880M while leaving me a ton of OC headroom on my CPU without running out of power!

 

Hi HaloGod2012 (and 860m owners),

I purchased an Asus G750JM-DS71 and updated to the new PREMA Vbios. HaloGod2012 seems to be the only person that has posted OC's with this specific model's GTX 860m modded to the PREMA Vbios. In order to obtain the coveted +325 core clock and +700 mem clock, how much voltage offset in Nvidia Inspector did you have to feed the 860m, HaloGod2012?

Here's what I got so far (all voltages are adjusted under Nvidia Inspector after modding PREMA Vbios and all scores reported are from 3DMark Firestrike Non-Extreme)

Stock Voltage
+200core clock and memory unchanged
4325 score (4675 graphics score)

Increased Voltage Slider (+87.5mV)
+225 core clock and memory unchanged
4378 score (4735 graphics score)

Increased Voltage Slider (+125mV)
+250 core clock and memory unchanged
4466 score (4858 graphics score)

Besides getting your data on the voltage offsets, I would appreciate anyone's advice or knowledge of the MAX voltage offset that the Asus G750JM might be able to handle. The reason I ask is my GPU temps are only 66*C (MAX) when using +125mV to obtain the 4858 graphics score in firestrike. Of note, I need to disclose that I undervolted the CPU voltages under Intel XTU to keep CPU temps low as well, 75*C (MAX) at 100% CPU load. Nonetheless, I would appreciate some input on how much voltage is safe for the GTX 860m as well as keeping my laptop motherboard from frying.

***Oh, and the weird thing is that...even when I use +125mV under Nvidia Inspector, the GPU-Z sensors only detect a MAX gpu voltage (MAX VDDC) of 1.093V. Even at stock clocks and running 3DMark Firestrike, the MAX VDDC is 1.093V. Can anyone help me understand why this is the case? Is the video card actually getting +125mV more or is it not?

Thank you so much beforehand for any inputs, knowledge, and advice from HaloGod2012 and anyone in the community. Good Night...Too much OC goodness...it's 4:21AM in California and I'm still awake typing this.

 

Just did 3DMark11; here is my result.

This is with core at 1387mHz, voltage at 1.100V. Temperatures are about 83-84 BUT I am on a 21 mm laptop so that is fairly understandable....
This puts it just above the 870m in the razer blade!!!! Here is that result!

 

Hi Sebi97,

Are the "Giga-Byte Technology Co., Ltd." Laptops equipped with a MAXWELL GTX 860m 4GB GDDR5. How come your core clocks are so high at 1320Mhz. In the Nvidia slider after flashing the PREMA VBIOS, I can only add +549Mhz to the core clock, that's stock 540 + 549 = 1089Mhz. Are the core clocks that much different in a 4GB GDDR5 version from Gigabyte as opposed to the 2GB GDDR5 version in Asus? Any chance you can upload a picture of your Nvidia Inspector or OC software used to overclock your card.

Also, could you do a 3DMark Firestrike score to see what you got and upload it. Thank you.

 

Update on my overclocking experience this morning,

It seems I made a big error in OCing the GTX 860m on the Asus G750JM. It seems that an EXTREMELY minor voltage adjustment was necessary to get better scores somehow. Let me explain...

I have the PREMA Vbios installed and raised the gpu voltage offset in Nvidia Inspector by +6.3mV and raised gpu core core clocks by +220 (resulting in a max core clock detected by CPU-Z somehow to be 1317.4Mhz). The max VDDC in GPU-Z is still 1.0930V while the AVERAGE VDDC is 0.8893V. I swear I haven't got a clue to whether these voltage offsets are sticking or not but the OC is going well.

Anyhow, the results are 4405 score in 3DMark Firestrike and a 4819 graphics score. This is all with +220Mhz increase to core clocks (essentially 760 core/1253 mem <<< as detected by 3DMark system details). I'll keep it going and update some more later

 

My core clock is running at 1387MHz; not sure why 3dmark is reporting it incorrectly. In fire strike, I got 4702

 

How much voltage did it take for you to be stable at 1387Mhz?

 

+281mV resulting in a max voltage of 1.100V

 

Hi Sebi97,

Thank you for the information. I FINALLY attained it. I just got a stable run of Firestrike with 800/1363 (+260core/+220mem). This resulted in a score of 4603 in Firestrike with a GPU score of 5015!!!

GPU-Z is reporting that my MAX GPU Core Clock is 1357Mhz and GPU Memory Clock is 2740.5Mhz. Max GPU Temps of 62*C on FULL FAN SPEED on this Asus G750JM-DS71. The Max GPU Voltage (VDDC) is 1.0930V; notably, I did increase gpu offset voltage in Nvidia Inspector to +6.3mV.

The weirdest thing I've experienced this whole day was getting the gpu offset voltage slider altering between intervals values. For example, when I set it at certain core and mem increases in the Nvidia Inspector and choose offset voltage of +12.5mV and hit "apply overclock" it changes from +12.5mV to +6.3mV (which was the original positive starting interval when I initially started this overclocking venture).

The most important part of my experience this whole day is that I've found my best recent overclock matching HaloGod2012 with a gpu voltage offset of only +6.3mV. That's all it needed!

My hypothesis is that the +6.3mV gpu voltage offset locked the GPU Voltage @ 1.100V. I've attached pics below.

 

1.15V is stock for 860m.

With 1.2V I can get 1377MHz, my biggest issue is with the vRAM that doesn't like to overclock by much.

 

On the GPU-Z, my max voltage is only 1.0930. Where could I find the specification sheet that says the stock voltage on a Maxwell GTX 860M is 1.15V? Also, has anyone tried to max out the gpu voltage offset slider in Nvidia Inspector to overclock their card? Just wondering because I want to try to push the voltage to see if I can stabilize the gpu core clock at over +260Mhz core.

Also, how we know if the gpu voltage increase we applied through Nvidia Inspector is ACTUALLY applied in the overclock?

 

I just use GPU-z when stressing the GPU to check actual voltage. All I know is I have seen 1.15V as stock config and max in the Clevo's at least is 1.20V which allows for little opportunity for additional overclock.

 

New video is up now

Hope you guys like it; took a really long time to create/edit/render/upload

It's Battlefield 4 with OC 860m

 

I maxed out the voltage slider on nvidiaInspector.

But I can only get up to 250mhz core/400mhz ram.
I am using Clevo W230SS and Kombustor reports voltages at 1.187v, I've seen it spark up to 1.193v but I don't know how to fix it to 1.193v

Temperature is below 70c

 

Nice video. Well done!

 

I'm really curious at what temperatures you're all getting with you're stock 860m at idle desktop and during gaming?

 

Hello everyone... I need your help to do something.

Indeed, I try to mod my GPU bios, I've extracted my 860m Maxwell bios with NVFLASH, because yet it's not possible with GPU-Z v0.7.8 :

Kepler Bios Editor v1.27 and Nibitor v6.06 are not compatible with the 860m maxwell to mod it. I'm not sure for KBE but you can try.

Can someone download my current default bios (the same which everyone have with a w230ss) to mod it and have those frequencies and voltage :

View attachment 114445

Thiose frequencies and voltages are maxed out and 100% stable for every games, no artefacts at all.

I dont know how to do it without a true software.

You can test the new bios with nvflash, you take an USB Key, you format it and install DOS, you drag and drop NVFLASH and the default bios and the current bios. You boot on it and type nvflash -6 "newbios".rom

Thank you by advance

Some software that should be usefull :
Download GPU-Z 0.7.8
Download Nvidia Inspector v1.9.7.2
Download NVFLASH v5.163.0.1

 

So !

After an afternoon, I've find a way to tweak my bios with KBE by myself.

It's a little bit complicated and I'm to lazy to explain it. Theres a lot of things to say about voltages/frequencies alignment etc etc....

Here's my customized bios : Voltage : +356,5mv (1,15v) GPU : +250 (1345,5mhz) Mem : +310 (1408mhz) ----> 100% Stable for me

[Removed - Copyright]

You just have to use NVFLASH in DOS mode to flash your beast.

Last thing : Indeed, it's impossible to raise the voltage up to 1,2v. So the max we can have with a 860m Maxwell is with 1,2v

 

Theres some years, a score like it was a dream for me...

NVIDIA GeForce GTX 860M video card benchmark result - Intel Core i7-4702MQ,Notebook W230SS

 

Your benchmark shows only at 666Mhz on the core clock. That's really not much on the OC (+126Mhz core). Stock 860m Core clock is 540Mhz. I got mine stable on the Asus G750JM at +240Mhz core and +140Mhz mem. That's with just +6.3mV. You could definitely push it some more.

 

Thank you so much for the information. I've been wanting to max out the Nvidia Inspector voltage slider. I finally have some time this weekend, and I'll push my laptop more. Just wondering has anyone hit a 3DMark Fire Strike Score of 5,000 or higher?

 

Here's my new bios, a more stable one. I had some crashs on Crysis 3 and Watch Dogs because of the core, and if I overtake 1,15v it throttles.

New frequencies : core Turbo Boost 1320,2Mhz, memory : 2924,9Mhz, Voltage : 1,15v

You can download it with all the tools you need on my mega account, [Removed - Copyright]

 

DUDE, please stop using my Mod as the base for your stuff and then publish it! Kindly remove those links. THX!

BTW, the throttle you see is not present with the original mod. Also you can boost the voltage with NVIDIA Inspector to 1.2v.

 

I smell a trap

 

First for all, thank you for your work

I did nothing with your mod, it just inspirates me. Mine is just for the GPU bios.

I worked with the stock bios and I've set the new voltage with kepler bios tweaker 1.27 in the voltage table, and I've add my stables frequencies and voltage.

For what you did (the 1,2v limit) It's not complicated : you go to the bottom of the voltage tab and you can set the max voltage you want, and the gtx 860m hardware block it at 1,2v even if you go higher.

BTW, your mod throttle when the temp overtake 92° Celsius for some seconds, but it's normal, 92° C is already too high.

 

@Marksman30k Try, you'll see.

If you have any problem you have the original unlocked bios in the folder

 

Your vBIOS base is already my Mod. All my Mods are marked...I don't use tools. All your uploads are based on my Mod. If you bought it that way then please let me know your re-seller.

My Mod has regular throttle removed. Stock vBIOS throttles all the time and vRAM OC sucks.
Of course if you go beyond 90C it throttles for safety. 1.2v is a hardware limit.

You can find the stock vBIOS in the W230SS package here:

http://biosmods.wordpress.com/stock/

 

Ok so I trust on you and maybe I've mistaken your modded bios with the stock bios when I modded it. It's easy confuse the files when you tweak something (originals, modded, backups etc...)

So are you sure I need to remove my links ? Personaly I dont care... I've just posted my works to share it to the notebookreview community

edit : I've done a verif and it's not possible to see a difference between your bios and the stock one on Kepler Bios Editor, but on nvidia inspector yes, of course.

 

All the links posted, including your original "stock dump", only contain my Mod a d versions based on it. If you wanna publish things, then simply work with the stock base posted on my blog...(keep in mind that not all cards may boot into Windows with the fixed values that are working fine on your own card).

(Stock BIOS has lower vRAM OC, the OC slider is limited to 135Mhz max, it throttles the Mhz and the voltage much earlier and has the lower voltage limit...we put a lot of time and effort into it..it's not just not simply done by a using tool.

And don't worry, no harm done.

 

No problems ! I remove my links and if someone need my help to custom his frequencies and voltages I'm here (I'm too lazy to do it again with the original one because I need to align all the 48 steps of turbo boost with the frequencie and his voltage, and I want also to take advantage and enjoy my bios on Crysis 3 a little bit ^^).

 

Yeah, last time I tried an unproven BIOS mod, I bricked a laptop which so happened to have a broken recovery system, I'm due to resolder the BIOS EEPROM this week in fact.

 

Hey Sebi, congratulations. Does anyone know if Prema's Vbios mod can be applied to the Lenovo Y50? My tempuratures are heinously cool and there's a lot of room for clock gain.
Which parameters are acounted/deemed for? Can Prema or yourself elaborate on this? Do we have an inkling weather the mod works on the Y50?
The ram overclocks to +700 stable if that is any indication.. Thank you

Edit: Prema seems to be predisposed atm; does anyone out there know weather the bio flash is viable/coterminus on/with the Y50?

The GPU uses Hynix memory (H5GC2H24BF4-T2C -- ~ confirmed source

 

It would need its own mod with the vbios extracting, modifying and repackaging.

 

It's part of the system BIOS on the Y50. I have the mod ready since quite some time now, but no time to prepare a proper flashing method atm (method to dump, modify and rewrite BIOS automatically in one go. There is no one mod works for all on this model, because of flash protections).

 

AFAIK there's no thermal sensor for vRAM chips on W230SS. How do I make sure I don't fry the vRAM chips during overclocking? What should I look out for?

 

If you get artifacts, stop the OC... Don't push too much as the memory is ususally fails first...

 

Could you please send it to me? Thanks, I have a Y50, it would really help me!

 

I wanna over clock an alienware 17 with 860m Maxwell 2gb with hynix gddr5, Can anyone talk me through it. I have overclocked aGeforce 260m past a 460m clock speeds and its still going strong. is it possible to overclock a i7 cpu 4710QM

 

Pulled this result:

NVIDIA GeForce GTX 860M video card benchmark result - Intel Core i7-4712MQ,Notebook W230SS

GPU +200mhz core | +120mhz memory | GPU +50mv.
CPU -200mhz core | -60mv.

Max CPU temp of 85c.
Max GPU temp of 65c.
Max power draw at the wall of 86W.

 

Hi All,

it's a fact that the w230ss cannot go over core +250 and vRAM +400?
Mine crash miserably if I try to go over the values above :-/ voltage is +368.8v

NVIDIA GeForce GTX 860M video card benchmark result - Intel Core i7-4810MQ Processor,Notebook W230SS

 

That's pretty much the limit I've seen on most. The Clevo W230SS is limited to 1.2V and depending on your silicon it may not be enough to get much faster than stock 1.15V.

Even though the voltage slider says +368.8mV that is actually max 1.2V if you monitor it with GPU-z or other app.

 

What's even weirder is that the GDDR5 on the W230SS are Samsung units binned for 6000mhz, we should all be getting at least +500mhz on the RAM. Strange that so few can get about +250Mhz.

 

Thanks to everyone to get back to me. I will try to re-paste with IC diamond and play further with the frequencies, but to be honest I don't think is a overheating issue since I never saw my temp to go over 75c

 

Where did you see that they are 6000MHz? IIRC when I checked the vRAM model printed on the chips they are 5000MHz chips. From what I undrestand, according to Prema, the vRAM has tight timings, which limits the OC, but Prema's mod loosens the timings a bit for more OC.

I'll check the next time I repaste. I want to anyhow because IC Diamond gave me the pressure paper and want to see how well the heatsink is seating to the CPU/GPU.

 

Maybe it's a stupid question....but do I need to change something into the bios settings after flashed prema mod? Cause I've only played with nvidia inspector and left the bios as default.

 

So how does the stock 860m compare to the desktop 750 ti? Is it much better when overclocked? What's the power draw like, either stock or overclocked?

I'm just kinda curious because I heard that the Alienware Alpha console would be using a Maxwell GPU based on a mobile part, and wondered if their 35W CPU and something like an 860m would manage to work with the 130W PSU they're using.

 

From what I know the Maxwell 750Ti and 860M are identical (same core) except for minor clock-speed changes. The other difference being that most 750Ti models are factory overclocked as well. Otherwise, I've found performance to be pretty similar. Recently built an i3 + ASUS 750Ti (factory OC) HTPC and it scored damn near the same as my W230SS with similar OC (~4400GPU on firestrike).

 

Just wanted to share my OC scores I did a while ago. This is with +290 on the Core and +600 on memory. Voltage is about 1.100V constant under load

 

You are awful lucky then. What did you use to measure the vCore? What laptop? Most users are upper limited to +250 as already noted and the vRAM +400 to +450.

 

Hello guys,

I just received my Y50 and I'd like to OC the gpu by a little bit.
What would you qualify to be a safe OC? Which software to use to do so and to monitor temps?

I'm quite a newbie at overclocking. If this has always been answered, please indicate me where to look at.

Thanks!