Throttlestop overclocking Desktop PCs

[Retrorockit]

If you want to experiment I would suggest a 20Kohm potentiometer to GRD from VSEN. The 20K value should give a slight bump in initial Voltage, and includes all lower values by adjustment.
If you can find a point to measure CPU Voltage then the effect of the mod can be determined. The initial value of the trim pot. will affect the initial Voltage bump, and the sensitivity of the adjustment. Less is more in both cases.
You could adjust the potentiometer to lower values (15K or 10K) and test to find what you need for a fixed resistor, or other trim pot. value solution. 20K is .5% change in value form 100 Ohm. My guess is it would be a safe starting point But it's an uneducated guess..

 

[frankr2994]

See what I just don't know and ya I guess it would just be an experiment is if vsen is just a voltage monitor and I trick it. Obviously that will let me apply more voltage. IF that has nothing to do with the current measurement then the PC may think there is only .8v but still show the correct 140 watts and throttles back. I posted a question on the community forum that makes the vrm controller. I'm starting to think that maybe I need to trick the 6 isen circuits. Again this goes back to all the reading I did on the GPU hard mod. When the modify the shunt resistors near the power connectors the are purely changing reported current. Actual die voltage continues to be read correctly. But there are 2 separate mods and I haven't looked into the 2nd much. It's my understanding that voltage control is non existent on some gpus and they also have to trick that to get another 10th or so volt. I would assume that's more in line with the mod your speaking of. I haven't played much with overclocking on my 1070 due to the immediate throttle it hits so I can't even say if I really could change the voltage. I also won't be experimenting with that since it just cost me 300 bucks and I can buy another t5810 for 200 lol.

 

[Retrorockit]

I play with LGA775 for a reason. They're dirt cheap, and in the case of Optiplexes totally expendable.
The thinking is if you spoof the VSENS pin the regulator will spoof the 6 VRM channels all at once. But if you've found a community for that VRM then you're way ahead of me.

 

[frankr2994]

Got a response. According to them they can't help without the motherboard schematic. Go figure.

"Re: IR3566B current sense
Hello ,

There are dedicate sense pins (ISENx) for the measurement and the telemetry for voltage, current and temperature of both the loops are read through PMBus/I2C interface. Unfortunately, we cannot offer more help since there is no detailed schematic available for your product. Request your understanding. "

And I got another response from a source that tried to help me out. Dell got back to him and said the schematic is under a nda. I'm going to do some more poking around before I try the experiment. I'm cool with wrecking the board but I'd rather not burn up a cpu.

 

[Retrorockit]

I came across this video. It shows you can get better performance with a mid range GPU than a high end GPU with low end CPUs, and AMD is better for this than Nvidia by over 20%. A lot depends on what resolution and detail level you're running at. But you can get better performance with a low end CPU if you get the right GPU , and also save some money on high end monitors too. It's long and complex because this guy did a lot of work to produce this. This may change the GPU hierarchy for older CPUs.

 

[lexluthermiester]

I came across this video. It shows you can get better performance with a mid range GPU than a high end GPU with low end CPUs, and AMD is better for this than Nvidia by over 20%. A lot depends on what resolution and detail level you're running at. But you can get better performance with a low end CPU if you get the right GPU , and also save some money on high end monitors too. It's long and complex because this guy did a lot of work to produce this. This may change the GPU hierarchy for older CPUs.

That is bizarre.

 

[Retrorockit]

In this thread I'll take that as a compliment.

 

[frankr2994]

Now is there any way that amd will just play better together? That wouldn't be the craziest thing out there if I heard that there is some little micro code somewhere letting that happen. Someone donate a bunch of GPUs to me and I'll test them on my xeon for a more relevant test lmao.

 

[Retrorockit]

It seems that less microcode is more with aging CPUs. They did play that game a while back with Crossfire, and SLI needing different chipsets or motherboards. Probably best not to go there.

 

[frankr2994]

Ok news...I did not do any hard mods and actually good thing. I have zero idea what the hell changed here but whatever it is....is awesome. I do not have an overclockable chip for myself at the moment. My 1650v3 is now in my son's computer. I tossed a e5-2640v3 I had laying around in mine....8 cores of suck. Playing with TS shown me that like every limit is hit all the time and it turbos to 2.8ghz...however I ticked the power it uCode 0x43 box and it worked for showing reduced pkg power. Didn't help this cpu out at all but it was showing 12 watts at full load. So I immediately ran into my kids room and brought up TS and ticked the box. Cranked turbo up to 4.4ghz and upped the voltage. Absolutely no limit reasons ran flawlessly. Reported like 18 watts package power. Now I had to set it back down because his stock cooler can't cope but WTH.. I know I ticked that box like 40 times before with no results. On my kids 5810 it's running the most recent bios and I even have the tpm 2.0 firmware installed for possible win 11 at some point. I've wasted like a million hours with bios mods and trying to figure out how to hard mod and there is no need. I'll be buying an e5-1660v3 here soon. 8 cores unlocked. It's f'n awesome I'm just going to be thermal limited.

 

[Retrorockit]

Don't feel bad. I spent 6 months thrashing my Dimension E520 at 3.45Ghz. Then took the fan off of the MB and 4Ghz happened. All the other stuff I'd been doing suddenly added up to something.

HWBOT shows average overclock on air is 4.24GHz and water is 4.5GHz so it's looking pretty respectable now.

 

[frankr2994]

Well because my kid actually does something with his PC as in gaming vs me just pissing around. I won't take the cpu back out......I was however very close to swapping coolers and my butchered case cover. I'm shopping now. I'd like to get a 1680v3 but they are 200 bucks. A 1660v3 is around 100. The 1680 seems pointless at that price because I could go up to a 6950x for 250. I fear the 6950x would cook though on my super micro heatsink. I think that chip is reserved for liquid cooling.

 

[lexluthermiester]

In this thread I'll take that as a compliment.

It certainly wasn't meant as a insult.

 

[Retrorockit]

Well because my kid actually does something with his PC as in gaming vs me just pissing around. I won't take the cpu back out......I was however very close to swapping coolers and my butchered case cover. I'm shopping now. I'd like to get a 1680v3 but they are 200 bucks. A 1660v3 is around 100. The 1680 seems pointless at that price because I could go up to a 6950x for 250. I fear the 6950x would cook though on my super micro heatsink. I think that chip is reserved for liquid cooling.

Intel Xeon E5 1650 v3 @ HWBOT

HWBOT is a site dedicated to overclocking. We promote overclocking achievements and competitions for professionals as well as enthusiasts with rankings and a huge hardware database.

hwbot.org

How does your son feel about adding the cooler? It seems 4.4Ghz would be good for gaming with 4 channel RAM.

 

[frankr2994]

My kids at the stage that if he doesn't see lag he's happy. Other than that I'm sure he'd love some RGB. he's just too young yet. I have him very interested in PC's but I'm still talking Greek to him about cpu speed. Besides his PC being like 90 percent stock means no problems like ever. I go juicing it up I'll be getting nagged all the time for something lol. My kid is 9 btw. If you think that's to young for his own computer your probably right lol.

 

[Retrorockit]

My kids at the stage that if he doesn't see lag he's happy. Other than that I'm sure he'd love some RGB. he's just too young yet. I have him very interested in PC's but I'm still talking Greek to him about cpu speed. Besides his PC being like 90 percent stock means no problems like ever. I go juicing it up I'll be getting nagged all the time for something lol. My kid is 9 btw. If you think that's to young for his own computer your probably right lol.

He's not at peer pressure age yet. I'm not sure RGB will add much cool factor to a Dell workstation. Only one way to find out.

It certainly wasn't meant as a insult.

"Bizzare" usually has a negative connotation. But workstation overclocking, and secret unlocked Xeons CPUs all fall into that category, so it fits in here. More of comment on the nature of this thread than anything else.

 

[lexluthermiester]

"Bizzare" usually has a negative connotation.

I've never perceived it that way. And as a general rule, in the english speaking world, it's not intended in an insulting context. It's a way of stating that something is strikingly strange or amazingly weird. Now that I think about it, I've never actually heard/seen the word "Bizarre" used in an insulting way. But I digress, we're meandering from the topic..

 

[Retrorockit]

I don't think I ever used the word "insulting". That notion originated with you. I think the word I actually used was "compliment". I think the word "bizarre" at least here in the US has a connotation of something "disturbing". Not the same as "insulting" at all. But sometimes words acquire a different implication in different places (or not). Even different parts of the US.
Since this thread is essentially disruptive in nature, that is the aspect of "bizarre" that I took as a compliment.

 

[frankr2994]

He's not at peer pressure age yet. I'm not sure RGB will add much cool factor to a Dell workstation. Only one way to find out.

It'll be hard for peer pressure to set in on material items. Parents today are odd to me. At least I see with other families I know is cool stuff is bought for the parents and the kids get the tail end of it. I'm the other way around. Almost no money spent on myself. Kids get all the stuff. Maybe a little spoiled but I don't care. I'll make sure as he ages I'll work the hell out of him labor wise. And his 144hz gaming monitor he has...that's like 3 b days worth of money he had saved up I made him use for it. Ask for RGB. If he wants it he'll have to buy that too lol. Computers,VR,game consoles,4 wheeler and he already has 2 rifles (complements of my dad....) He has enough not to get bullied on objects for a while lol.

 

[Retrorockit]

He's not competing for girls yet. The need for oneupmanship hasn't arrived yet.

 

[frankr2994]

He's not competing for girls yet. The need for oneupmanship hasn't arrived yet.

Ask my wife is she gives a flying F&@$ about my PC rig lmao.

So I was going to piss around with lapping this 2640 cpu. I have prime 95 running a torture test small fft. I immediately got power budget limit set and it started throttling back from it's already slow 2.8ghz. I turned on power cut and reported wattage is 9.4 watts at a full avx workload and stays steady at 2.8ghz now. However this is not a cpu I can check to see what lapping does. Prime95 has been running for about 20 minutes now and I haven't broke 60c. I'll probably still piss around with lapping it just to get the hang of it but since I can't even get my fans to ramp up....at all I don't think I'll see a difference in temp no matter what I do.

 

[Retrorockit]

Try HWInfo 64 or some other utility with a manual fan controller. The Dell fan curve may not do anything until 60*C. Lapping was worth about 3*C for me. But I was probably pushing around 200W through the QX6800. Numbers around 10W are hard for me to relate to.

 

[frankr2994]

No no the real number would be about 120 watts on that cpu. The powercut feature in TS is letting it report 10watts. The tdp on that chip I think is 95 watts which is why prime95 triggered power budget. TS fixed that. What I wanted to see was like my other chip when it got close to 80c it didn't matter if the fans were at 40 percent or 100 I couldn't draw anymore heat out. With better heat transfer I'd like to see the fans actually accomplish something. Since at 120 estimated watts the heatsink I'm using almost doesn't need a fan it's sort of a pointless test lol.

 

[Retrorockit]

Your other CPU has a TDP of 140W. From what I recall on other CPUs 175W is what the stock soldered heatspreader is rated to disperse. I haven't found the spec. on that one. So lapping and high quality TIM will be required. There are some TIM that are phase change (liquid when hot) and a couple are actually low temperature (100*C) solders. Turning off hyperthreading might gain some headroom also. Grizzly makes a few high end TIM products. But when just thrashing around with coolers I use Arctic Silver or TX4.
When you get this finalized a screenshot of your TS settings would be helpful since you seem to be the first one doing this CPU with TS
What size fan does that heatsink take? Is it in the middle or hung off the end?

 

[frankr2994]

I have been using arctic silver 5 but just ran out. Fan is 90mm hung off the front of it blowing through. It's not the fan that came with it. I bought another system fan that's meant to go in front of my PC. It's like 35mm thick high pressure server fan. Fyi the Dell server fans and cpu fans run on the same connection but wires are switched so I had to repin. The supermicro heatsink had to have the holes drilled out so I could use dells retaining screws. You can see I have washers stacked to get the spring tension back. I'll get another shot tonight. I modified the ram shrouds to go back on.

Oh and the fan I have mounted on the back of the case is the one that came with the heatsink. I have that hooked into the un used HDD fan header. You talked about using something to change the fan curve...I've tried that. You can basically change at what temp they come on full blast nothing else with this Dell. I have the fan set to auto in the bios with base fan speed at 30 percent. Just quiet enough not to annoy. Fans don't ramp up any until it's at 70c. Full tilt is un bearable seeing that has basically 5 server fans in it right now.