overclocking GTX 470m

hey, how much of an OC can i get on this card in my np 8690-s1?

it's stock now, but i heard it can be beastly when overclocked...

question is, what numbers has anyone have overclocked it to?

 

Maybe look here.

 

Overclocking is the same for any card, it really doesn't matter what others have done. Start with either the GPU or the memory, use 10-20MHz increments, test it with OCCT. If it passes, bump it again.

 

The thing about the GTX 470M is that the memory is already clocked to the max rated speed of the chips themselves, as inscribed on the chips, at 1250MHz (625MHz up/down). I wouldn't push it past 650MHz as your primary/daily clocks, which is a 4% gain over factory, as you will encounter problems in the long run like a few of the fellow naive souls that have had their GPU's die on them because of overclock abuse. Though like I said before, the number one killer is still heat, so just keep your temps low and your memory within 650MHz.

You can crank your core/shader clocks until they become unstable or heat becomes too high. Again just watch your temps. In my book, I lock the core/shader ratio.

You should be able to touch 585/1170/650 on factory voltage. If not, just overvolt the sucker.

 

Soviet, thanks for the advice. But I am new to this so I am a little confused. When you say keep memory clock at 650, but when I open GPU-Z and it already shows my memory at 750. You mean it could go to 650x2 = 1300?

My clocks are currently: GPU: 535, Memory: 750, Shader: 1070

Tech17 in the benchmark forum has his at: 650/1500/1300 and 687/1700/1375.

You are suggesting 585/1170/650.

I am really confused to which is which... I seem to remember from somewhere that shader should be 2x the gpu clock... Can someone help this noob out?

 

I stand corrected. I divided twice too many times in my calculations under the influence of good liquor and sleep deprivation from post-finals partying. The max memory rating for the GTX 470M stands at 1250MHz, the same as the MR 5870. The factory clock for the memory on the GTX 470M is at 750MHz, but Tech17 took the memory to 1375MHz, 10% over the rated max. The chips clearly have 04 written on them denoting 0.4ns, or 2500MHz (1250MHz up/down). That's where I divided too many times in my previous post. It's stupid of me since Samsung (or any other company for that matter) doesn't produce GDDR5 modules with a max rating as low as 625MHz. http://www.samsung.com/global/system/business/semiconductor/family/2007/7/2/963584Graphics_code.pdf

Memory bandwidth is very predictable and is simple to calculate. http://forum.notebookreview.com/6023663-post370.html

If Tech17 was able to clock his GTX 470M core/shader to those levels, then follow his lead. They are safe since he hasn't overvolted yet. But 687/1700/1375 is a really strong overclock already. If I were him, I wouldn't clock the memory no more than 5% past 1250MHz. Better yet, don't exceed 1250MHz as that much memory bandwidth isn't needed outside of benchmarks. This will leave more headroom for cranking the core/shader, which will yield you more FPS. Again, as I've said before, just keep the temps low.

If someone can provide a high quality macro shot of the card, I can properly find out the voltage limit for the core MOSFET's, or better yet the schema for the GTX 470M's circuit layout. The highest voltage in the voltage table is not the true max.

For GF1xx cards, the reference ratio for the core/shader is the shader being twice the core, as opposed to the G92 which was at 2.5.

 

Thanks soviet! I will start with core: 585/memory: 1250/Shader:1170

 

Correct me if I'm wrong as I am still green when it comes to OCing. Singly are saying that OCing the memory can damage the GPU even at stock voltage?

 

The accessible voltage on the card only controls the Vcore for the die. It does not adjust memory voltage. GDDR5 is fixed at 1.5V VDD and VDDQ, 1.3V at rest.

Excessive memory overclocking beyond what the chips are designed to handle will damage them. If you don't control your temps, or if you overclock beyond 5% past the rated max, or both, will you see damages in the long run. Not replacing your thermal pads if you frequently remove your GPU heatsink also contributes to damage as I have hammered so many times in the past.

 

You should also know that in general the video memory is much more prone to damage than the core. Most video cards fail because their GDDR fails not their core, that's why it's best take good care of your GDDR memory.

Also the core has some safe-guards which prevent it from overheating which the GDDR doesn't, plus you never know how hot it gets.

@Soviet Sunrise - Thanx for the info. I'll add the 470M memory to the GDDR memory thread. I find it strange that Clevo decided to run it's GDDR5 at 750Mhz, way below official specifications.

 

Because they are abundant and cheap, and it puts less load on the I/O. Samsung makes so many of these 50nm GDDR5 chips that companies like Nvidia can buy the lower bin samples for mobile cards as their max rating doesn't need to be high, and the higher bin samples for the desktop lineup where every clock counts. I've also never seen GDDR5 chips rated lower than that (aside from it's DDR3 cousin). At 750MHz, the memory bandwidth tops around a comfortable (and theoretical) 72GB/s as calculated from my formula in my previous linked post. The chips can easily handle that speed and because there is plenty of bandwidth already from being pumped through a 192bit interface, there is no reason to put a larger, more power consuming 256bit I/O bus on the card. However, it wouldn't be compatible in the first place since you would need eight 32bit channels to utilize a 256bit I/O (or 128bit, 512bit, 1024bit, etc: only multiples by power of two can be used). You would need to equip a 384bit bus in order to run with only six channels. The GTX 470M and GTX 460M only have six 32bit chips, each being 256MB each. If Clevo were to fill in those two remaining vacant module spaces on the GTX 470M with chips, then can a 256bit bus be used, and you will end up with desktop level memory bandwidth, and an unnecessarily large amount of memory, that is absurdly overkill for the current mobile GPU performance.

 

I guess you have a point, that 750MHz is more than enough. But running at 850 or 950 for instance would provide some performance improvements without any hassle. At least in theory.

I am more inclined to believe that the reason why the memory is rated so low is to keep power consumption and heat at lower levels. If I recall correctly, the M5870 had some temperature sensors for the memory and those used to get close to 90C or even more. Which in way too hot for my taste. If you further overclock the memory then those temps will reach the lower 100C which will drastically cut the life of the GDDR and of the card overall.

 

The MemIO temp sensor on the 5870 is for the memory controller in the GPU, not the memory chips themselves. Even on desktop cards, that's always the hottest part. I would put the chips at well below 90.

 

Ah, ok. I didn't know the exact details.

 

Hi there, I am green to this site but not entirely green to overclocking mobile gpus. Now I've got a overclocked GTX460M @815-1630-3330 which originally runs at 675-1350-2500. The fact is, at this speed the chip runs perfectly, especially with my external heatsink attached to the heat emitter on the side of my MSI GT663. @815-1630-3330 The highest temp was about 79C (Room temp 28C) with Furmark's extreme torture mode (10 minutes)

I've read a lot of your posts, and admired your work and clarity about overclocking and overvolting. Actually, I am green to this site therefore I don't know how to PM you, but if you can help me with my GTX460M I'd be truly grateful. (Yeah I also replied you on the GTX480M thread and requested for help...)

Like you have said on this thread, the industry memory clock of 625Mhz(or 2500MHZ) of GTX460M and GTX470M was already quite enough, I am concerned that my overclocking of 832MHZ(3330MHZ) might be a bit...uh...too excessive. Though, I've experimented to find out that the memory clock that's gonna trigger graphical errors(like textures popping and blinking) is about 910MHZ. But on the other side, even I try to keep the Memory clock at original, I can't overclock the core-shader beyond 830MHZ, which in my opinion, is far from true potential of a complete GF106(Yeah, I've noticed that the desktop GTS450 is based on an imcomplete GF106 with only 16 ROPs).

Therefore, if by any chance you can help me overvolting my GTX460M, it would be totally great!. Attached here is my original BIOS and a stable OC BIOS of my Video Chip. Please feel free to test on them.

Thanks!

 

how do you overvolt the mobile gpus? i understand the desktop side of it but not the "video bios" part of it...

 

@Honorhorror? What is up with your clocks? Are you multiplying them wrong? From what I know, default clocks are 675 core, 1250 mem and 1350 shader. You've multiplied the memory by two, twice. The 1250 is already 625x2. Check my sig for the proper values. I have mine overclocked to 825/1350/1650 with the mem being 675x2.

 

Thanks man. Yeah my memory clock, calculated by your method, should be 1665. I say 3330 because the GDDR5 memory's effective clock is displayed clock*4, like 625*4=2500, 675*4=2700, etc.

In fact, my overclocking method is to modify the vbios so that the card works on the overclocked speed on default. Yet, none of the available overclocking softwares(Nibitor 6.0, Fermi Bios Editor) support the voltage modification on mobile GT400 cards. Therefore I am probing for some method to overvolt my card beyond the lame 0.95v.

Actually if your laptop is produced by MSI, then you can try to flash your own card with my modified bios directly. But if your GTX460M was produced by some other OEM then you will need to modify the manufacturer ID, using Nibitor.

Though, your overclocking of 825-1650 is already over the top for my card at the current voltage. I used to overclock mine to 825-1650 and passed the 3DMark 06 and Furmark. yet, in some games the video driver turns itself off and reports an error, you know what I mean... Therefore now I use a lower clock for gaming--815-1630-1665.

 

Yeah I can't achieve as high an overclock as you because I have an Extreme CPU that sucks more power. I have an Alienware but the GPU is from Clevo and I want to overvolt too maybe just 1v so I can achieve reall 450 GTS speeds.

 

Actually I've searched on this forum and found a Mr. "Soviet Sunrise" who's really good in modifying vbios, he also said he's a computer engineer student... On the thread about overclocking GTX480M he told the Original Poster to PM him the bios so that he can overvolt it for him...

But I am such a rookie to his site that I don't even know how to PM people...I have posted multiple times to ask his help, with my vbios attached. But I guess to PM him seems more proper. Maybe we can ask him together.

 

Actually based on my overclocking experience, each card with the same name has its own unique optimal oc clock under the industry voltage. That's because although the industry clock are same on all, for example, gtx470m, the actual potential depends on each chip and its pcb's quality. Basically, My GTX460M's particular optimal oc clock is core815-shader1630-mem1665 under the industry voltage 0.95v. But I've seen better on other people's machines. Some even oc'd to 830-1660 and still be able to run everything normal with an acceptable temperature... So it's really up to everyone to experiment to find out about their own card.

But again, you can calculate it by yourself, at core670-shader1340 the card literally has a single-precision floating point calculating power of 771.8g flops, 32.1g/s of texture filling rate, 16g/s of pixel filling rate. It's already way beyond the desktop gtx460SE. In short, your card is already beastly, you may just try to make it even more so.
Though, my prediction on gtx470m is that it's hard to oc it beyond core670-shader1340 at default voltage for 2 reasons, one is power, the other is stability. I've just learnt from other oc enthusiasts that the bigger the size of a chip, the smaller the room for it to oc. That's why it's relatively easy to achieve a stable oc as high as core-1.2ghz on GTS450, but not so easy to do so on GTX460.

 

You should be able to PM him now, you need a minimum of 5-6 posts - click on his name on any of his posts and it should now give you the option to pm him

 

Thanks theriko. I already did.

 

ah cool... Anyone suggest a decent artifact scanner?

hmm... im trying to aim for somewhere in the 620-650 neighborhood, but the thing is, some games are fine, while others artifacts. Source games are fine, but Unreal games make artifacts.

 

OCCT, you can test GPU and memory with it. It will tell you for sure if your settings are actually stable.

 

tried crysis 2 MP demo, damn it gets up to 87c on 625 core, is that bad?

 

That's quite high. Have you done a repaste? I have a 460m granted it is one of the coolest running cards around, it hardly ever goes above 70C I think you should be worried if it is hitting over 82C.

 

well, u have a 192-core part, mine's 288, i guess heat characteristics has to be different.

 

Yeah I know but I still think it is a bit too hot. A repaste maybe.

 

i've seen worse. MY friends one time play Battlefield 2 on an old Asus with 9600m GTS, and it got way up to 100c and somehow it still worked.

 

hehe after some tweaks thanks to www.mvktech.net
GPU @ 770
Shader @ 1540
MEM @ 1700
3D Vantage 14906 (physx enabled)
GPU score : 12269
Result

 

I lock the 635/800/[email protected]

some friends run at 650/800/1270

you may try 635 like me and will gain more power （thanks to NBR guys suggestion）

my only test game is mafia2 , good when setting like :

开 means ON
中等 means MEDIUM

this config 470m easily touch 60fps in much scenes when driving in the street , but not a Sustainable 60fps like 485m
470m will run from 36 to 62 fps when overclocked in all scenes , 45-60 is more common .



and NFS13shift 50+fps when 8 cars in front of your car

or unlimited drive 2 will 60+ in more scene .

 

To Kill4l,

I Plan to buy Eurocom Neptune:

Spec: i7-2860QM; GTX 470M; 120hz 3D Display (LG LP173WF2);

My Question is:

1 - Can GTX 470M support 120hz display as I'm mention Above ?
2 - I read your previous post, you had overclock your card 770/1540/1700
Do you have any problem with the card until now?

Thank ..... Nice effort

 

Does anyone by any chance can fix me up a gtx 470m vbios? i really need one, as mine is blank therefore i´m not able to use it. please help.