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quick SL question in regards to 7700k binning

post #1 of 6
Thread Starter 
I'm a bit confused about something in regards to siliconlottery.com, and I hope that people here can clear it up for me. On their product page for their 7700k 5.2GHz bin, they state that the chip passed 1 hour of RealBench with a 52x multipler and 1.44v voltage using a Corsair H105 AiO with 22C ambient. They also say that the chip has NOT been delidded. (It's an additional service that can be purchased.)

They do NOT mention (unless I missed it) the max core temperature they allow for passing their testing.

Full stress test load at 1.44 volts with a 52x multipler WITHOUT delidding and using a AiO? That seems a bit hard to believe unless the chip is thermal throttling like mad the entire time.

Does anyone know what SL allows as a max core temperature for their binning? Is it possible that they don't limit it and ignore thermal throttling? Does a chip "pass" their testing as long as it doesn't crash?
    
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post #2 of 6
Quote:
Originally Posted by garyd9 View Post

I'm a bit confused about something in regards to siliconlottery.com, and I hope that people here can clear it up for me. On their product page for their 7700k 5.2GHz bin, they state that the chip passed 1 hour of RealBench with a 52x multipler and 1.44v voltage using a Corsair H105 AiO with 22C ambient. They also say that the chip has NOT been delidded. (It's an additional service that can be purchased.)

They do NOT mention (unless I missed it) the max core temperature they allow for passing their testing.

Full stress test load at 1.44 volts with a 52x multipler WITHOUT delidding and using a AiO? That seems a bit hard to believe unless the chip is thermal throttling like mad the entire time.

Does anyone know what SL allows as a max core temperature for their binning? Is it possible that they don't limit it and ignore thermal throttling? Does a chip "pass" their testing as long as it doesn't crash?

Here's a little tidbit: http://www.overclock.net/t/1619559/kaby-lake-binning/130#post_26031695

Processors we test don't pass if they throttle during the stress test, they would move down bins until they do pass without thermal throttling.
post #3 of 6
Thread Starter 
ah, thank you. Its nice to know that there are some 7700's out there that actually might work properly instead of the 2 horrid samples I've had most recently. (It's sad when a 7700k thermal throttles under linkpack with intel stock (not motherboard override) turbo/voltage settings and a custom water loop. I'll admit my ambient is higher by a couple of degrees, but not THAT much higher.)
    
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post #4 of 6
Quote:
Originally Posted by garyd9 View Post

ah, thank you. Its nice to know that there are some 7700's out there that actually might work properly instead of the 2 horrid samples I've had most recently. (It's sad when a 7700k thermal throttles under linkpack with intel stock (not motherboard override) turbo/voltage settings and a custom water loop. I'll admit my ambient is higher by a couple of degrees, but not THAT much higher.)

There are definitely many chips out there like you describe. I wouldn't call throttling with linpack at stock under water too uncommon.

Now imagine what they run like under those old stock coolers. It's not pretty. By ditching the stock coolers on these K SKUs, it's given them the ability to eat away at even more of the remaining headroom available on these chips.
post #5 of 6
Thread Starter 
Quote:
Originally Posted by Silicon Lottery View Post

There are definitely many chips out there like you describe. I wouldn't call throttling with linpack at stock under water too uncommon.
My newest lottery ticket.. er.. 7700k is a bit better. I can only guess based on VID's (will explain below), but it's only asking for 1.16v while running 8 threads of linpack at 4.5GHz.

The reason I can't know for certain is that "this time around" I decided to try the gigabyte z270 gaming 7 motherboard. Despite reports claiming that the BIOS bug causing it to overvolt chips being fixed, it still seems to exist to some degree. On my sample (BIOS updated), the chip was requesting only 1.16 on all 4 cores (as described above and reported by HWInfo), but the motherboard was reporting a vcore of ~1.3v. (though, even at 1.3v, I wasn't thermal throttling whatsoever.)

Using gigabyte's "dynamic VID" (similar to "offset" mode on Asus boards), I was able to use negative offsets to bring it down a bit, but the chip started to get unstable during more idle periods. (Which, as I'm sure you know, is expected and why "offset" mode isn't used very often.)


It's a shame. It's such a pretty board inside my case with a tempered glass side. wink.gif Although, to be completely fair/honest: while gigabyte puts quite a bit more "bling" LED's on their boards, their software/firmware implementation for controlling LED's (and BIOS interfaces in general) could learn something from asus.

Oh well. It has to work properly or I learn to hate the "bling." I think I'm going to end up back with a "hero" board. Most all the functionality, a bit of bling, and no plastic "armor" to trap heat in the same area as my m.2 device. And while it's not perfect, I know what to expect and I'm really VERY, VERY tired of driving 2 hours (each way) to my closest Micro Center to replace motherboards and processors.

In case I didn't mention it - thank you for answering my initial query. Until you did, I was going to abandon the 7700k all together as a lost cause.
    
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CPUMotherboardGraphicsRAM
Intel i7-7700K Asus ROG Maximus IX Hero Gigabyte GeForce GTX 1070 G1 Gaming 4x 8GB Vengeance LPX Series 
Hard DriveCoolingOSMonitor
1TB Samsung EVO 960 NVME M.2 custom loop: Supremacy EVO, hwlabs 360GTS Radi... Windows 10 Pro x64 Asus PB328Q 32" WQHD 
MonitorKeyboardPowerCase
Asus 25" 16:10 (forgot the model number) Ducky Shine 5 EVGA SuperNOVA 650 G2  Corsair Crystal Series 460X RGB 
MouseMouse Pad
Logitech G900 Corsair MM300 
  hide details  
Reply
post #6 of 6
Quote:
Originally Posted by garyd9 View Post

My newest lottery ticket.. er.. 7700k is a bit better. I can only guess based on VID's (will explain below), but it's only asking for 1.16v while running 8 threads of linpack at 4.5GHz.

The reason I can't know for certain is that "this time around" I decided to try the gigabyte z270 gaming 7 motherboard. Despite reports claiming that the BIOS bug causing it to overvolt chips being fixed, it still seems to exist to some degree. On my sample (BIOS updated), the chip was requesting only 1.16 on all 4 cores (as described above and reported by HWInfo), but the motherboard was reporting a vcore of ~1.3v. (though, even at 1.3v, I wasn't thermal throttling whatsoever.)

Using gigabyte's "dynamic VID" (similar to "offset" mode on Asus boards), I was able to use negative offsets to bring it down a bit, but the chip started to get unstable during more idle periods. (Which, as I'm sure you know, is expected and why "offset" mode isn't used very often.)


It's a shame. It's such a pretty board inside my case with a tempered glass side. wink.gif Although, to be completely fair/honest: while gigabyte puts quite a bit more "bling" LED's on their boards, their software/firmware implementation for controlling LED's (and BIOS interfaces in general) could learn something from asus.

Oh well. It has to work properly or I learn to hate the "bling." I think I'm going to end up back with a "hero" board. Most all the functionality, a bit of bling, and no plastic "armor" to trap heat in the same area as my m.2 device. And while it's not perfect, I know what to expect and I'm really VERY, VERY tired of driving 2 hours (each way) to my closest Micro Center to replace motherboards and processors.

In case I didn't mention it - thank you for answering my initial query. Until you did, I was going to abandon the 7700k all together as a lost cause.

No problem!

Also, try using 4 threads on linpack instead of 8 if you're searching for the harshest workload. Hyperthreading is typically a performance penalty with linpack.
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