i7 8700K, 8600K, 7700K Overclock results

[Vario]

You need to tighten sub timings. At 4000+ some timings will go very loose.

Try looking at this. Credit : https://bbs.io-tech.fi/threads/inte...otukset-kokemukset.41829/page-53#post-2000999

Wow nice result I will try later!

 

[cadaveca]

I also doubt -1 is going to yield much cooler anyway considering i doubt it changed vcore much.

It doesn't change load voltage at all taht I ahve seen, merely lowers the multi. So whatever votlage you have set for the higher multi for other loads will be applied. Would be nice to see full customization of that option, for sure.

 

[EarthDog]

That is a really good point that I forgot, Dave.

From my testing on X299, I see 4C difference between 4 GHz and 4.3 GHz at the same voltage. 100 Mhz differences are typically 1-2C (at the same voltage).

 

[cole2109]

 

[Vayra86]

Sweet. What are your settings to end up with that 1.344v? Those temps look decent as well, what are you cooling with?

It doesn't change load voltage at all taht I ahve seen, merely lowers the multi. So whatever votlage you have set for the higher multi for other loads will be applied. Would be nice to see full customization of that option, for sure.

Definitely - what I really miss with Intel CPUs is a custom temperature target to trigger a downclock.

If you'd compare the way Nvidia GPUs boost and Intel CPUs do their speedstep... Intel's approach is crude and basic really

 

[DR4G00N]

If you'd compare the way Nvidia GPUs boost and Intel CPUs do their speedstep... Intel's approach is crude and basic really

But the bonus is that at least you can turn speedstep off unlike gpu boost/cancer.

Edit: I'd add something productive but my Kaby rig (7350K) is for benching only, so unless you like running your B-Die at 4000+ 12-11-11 @ 1.9V+ I can't be of much help.

 

[EarthDog]

Definitely - what I really miss with Intel CPUs is a custom temperature target to trigger a downclock.

Use the motherboard.

That said, they do have a limit... TJmax. They will throttle when they can't handle the heat... which Intel set the threshold. Anything under..... GO!

 

[cole2109]

Sweet. What are your settings to end up with that 1.344v? Those temps look decent as well, what are you cooling with?

Water cooling EKWB 360 rad. But room temp. was low and fans at 100%. AVX@0, LLC 6 (Vcore 1.35v in bios), asus multicore@ disabled, CPU SVID@ disabled, CPU core/cache@ 255,50, MIN/MAX CPU cache ratio@ 46 and some other tweaks. MB is Asus Strix Z370-F Gaming and 16gb Hyperx Fury 2666MHz@3200 stock voltage. Max CPU boot is 5300 1.44v but temp. is toooooo high.

 

[erocker]

DDR4 4300 requires 1.1V for the VCCIO/VCSSA

Depends on the CPU being used. IMC's vary from chip to chip. What works for one CPU won't for the other.

 

[Enterprise24]

The SPD tab in CPU-Z don't show anything so I didn't open. It is Panram Ninja-V DDR4-3000 CL15 @ 4133. IO 1.2 SA 1.25. VDIMM 1.45V.

Didn't expect this from a low end B-die. Stock frequency is just 3000 and stock timings is very relax 15-17-17-35.

Quick run with 1.92V.

Sadly the Taichi can't boot at 4000 12-11-11-28-1T but 2T is possible so I didn't try since 2T score efficiency is trash.

 

[Vario]

^nice to see you on windows 7 with the coffee lake Good results.

 

[Enterprise24]

More work to do. IIRC error that is far away is relate to cache.

 

[Enterprise24]

Extremely tired with HCI memtest as I cannot conclude that a little small errors come from RAM or cache. So I was looking for something else. This time is GSAT (Google Stress App Test). Naturally this must run on Linux Mint but there is workaround for Windows 10 x64 build 1703 or higher.

Try 17-17 again.

 

[Enterprise24]

4133 16-16 need 1.55V for GSAT !! Not bad for a cheap low end B-die. My friend's first revision of TDZ 3600 CL16 non RGB need 1.51V.

 

[Enterprise24]

Anyone experience CPU temp increase by tighten these 4 timings together ? Tighen each alone don't have problem but together they are big problem !!
tRRD_L
tRRD_S
tFAW
tREFI
I notice some strange behavior on some programs like
Prime 95 temp increase by 15C power package increase as well.
LinX 0.9.1 a lot higher GFlops (from 200 ish to 400 ish GFlops) temp massively increase and PC shutdown.
HCI memtest a lot faster for 100% coverage (from 40 minute to around 25 minute) temp increase a little.

 

[EarthDog]

That isn't really possible? Those are what secondary/tertiary timings, no voltage should change (check that).

There is obviously no way it can double GFlops either...


Seems like you weren't stable. But I would do a bit more empirical testing as I don't see how temps would increase that much by adjusting memory (regardless that IMC is on CPU).

 

[Enterprise24]

I think it is good. P95 26.6 1344K (like caseking and 8 packs used to binned their CPU).

No WHEA or CPU L0 error in HWInfo64. For mem I check a lot with HCI and GSAT.

I will post some pic about these topic again.

 

[jboydgolfer]

cant wait to see what OC i can get out of my 8600k . Never been super into OC, but i do like to add a ghz for fun now & again

 

[FreedomEclipse]

Sigh... My heart bleeds for a new PC but I currently cant afford a new one given the fact that im currently looking for a new job.

Im tempted to buy the parts on credit which allows me not to pay anything for 9months, By that time i'll already be in a different job and able to pay all it all off outright or in much bigger monthly installments.

 

[cole2109]

Testing new batch...

 

[jboydgolfer]

Sigh... My heart bleeds for a new PC but I currently cant afford a new one given the fact that im currently looking for a new job.

Im tempted to buy the parts on credit which allows me not to pay anything for 9months, By that time i'll already be in a different job and able to pay all it all off outright or in much bigger monthly installments.

I feel your pain, trust me i do. I was forced into this, as one of the kids needs a upgrade. Since i didnt need a gpu, it was feasible

I'd have to do the math to get the exact number, but within $5 or $10 I can estimate ,and it wasn't very expensive

$230 -8600k
$160-asrock z370 extreme4
$80- seasonic focus+ 750w
$80- 2x4gb ddr4
$80-fractal design meshify
$630 all together (didnt buy a gpu since i can get by on the older one i have until market settles) . Aside from the ram, prices are exactly what they were the last time I built a computer a few years ago. Had I needed a video card nothing would've happened and I would've waited.

 

[FreedomEclipse]

Things are currently VERY expensive here...

Basically $1194 if you round it up. Price of ram is pretty retarded. I cant believe it costs as much as the CPU which is just straight up dumb. I could save myself some cash by going with a WD Black M.2 SSD but those are a little slower than the samsung specced.

part of the reasoning of buying a new PC apart from my current one slowly dying is to motivate myself to get out there and look for work. Sometimes it can be a real drag but If i put myself in a position where i need to pay something off then I'll be more pro-active with the whole thing. At the same time It also dooms me. Of course I could still pay the installments but it will eat significantly into what i current earn.

 

[jboydgolfer]

Things are currently VERY expensive here...
View attachment 98288

Basically $1194 if you round it up. Price of ram is pretty retarded. I cant believe it costs as much as the CPU which is just straight up dumb. I could save myself some cash by going with a WD Black M.2 SSD but those are a little slower than the samsung specced.

part of the reasoning of buying a new PC apart from my current one slowly dying is to motivate myself to get out there and look for work. Sometimes it can be a real drag but If i put myself in a position where i need to pay something off then I'll be more pro-active with the whole thing. At the same time It also dooms me. Of course I could still pay the installments but it will eat significantly into what i current earn.

That's absolutely ridiculous. In that case ,I'm very sorry ,and I don't know how you feel ,because prices in the US have never been that high. Now I feel bad about being grumpy for the ram and GPU prices . At our prices, my build would cost you about £450 after tax & S/H

 

[Vario]

Sold my old stuff on eBay, before fees:
Three DDR3 8gb ram kits ~$180
Z77 Mobo $140
3770K $205

Bought 8600K $235
AsRock Z370 Taichi $205
G Skill DDR4 $220

Wasn't too bad, the DDR4 was the real costly part. I could have gone with a cheaper motherboard, cheaper ram and shaved off another $100.

 

[FreedomEclipse]

Sold my old stuff on eBay, before fees

I was watching an identical CPU+mobo combo to my pc on ebay and it went for $420. Sadly for me my board is one foot in the grave and even though I could sell it, i probably wont be able to fetch the same amount for it.