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ColeLT1
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Built and OCed 3x I7 - 7700k gaming rigs (4.9-5.2ghz)

Mon Jan 30, 2017 2:20 pm

I was rebuilding my home pc (CPU/RAM/Board/SSD), a friends (CPU/RAM/Board/SSD/Case), and another full build for another friend. Was able to boot at 5.3ghz, but not stable above 5.2ghz, setting a personal best ghz record. Then backed each chip off 100mhz for long term stability, followed up with a 24hr test. Figured I would share my results and some pics!

I-7 7700k
G.SKILL TridentZ 16GB DDR4 3600 F4-3600C16D-16GTZ
ASUS ROG STRIX Z270H
SAMSUNG 960 EVO M.2 500GB


Chip 1 L639F993 FINAL 1.375v 5.1GHZ cpu 5.1cache AVXoffset to -6 (4.5ghz) w/custom waterloop
Chip 2 L640F751 FINAL 1.325v 5.0GHZ cpu 4.6cache AVXoffset to -5 (4.5ghz) w/hyper212led
Chip 3 L640f771 FINAL 1.300v 4.8GHZ cpu 4.5cache AVXoffset to -3 (4.5ghz) w/hyper212evo

OC notes:
Chip 1

Adaptive voltage 1.200v x264 stress test
4.7ghz = 72-67-72-68 30min stable
4.8ghz = 73-67-73-68 15min stable 4.82fps
4.9ghz = 73-67-72-68 30min stable 4.89fps
5.0ghz = no boot

Adaptive voltage 1.225v x264 stress test
5.0ghz = no boot

Adaptive voltage 1.250v x264 stress test
5.0ghz = no boot

Adaptive voltage 1.275v x264 stress test
5.0ghz = 84-77-83-79 14hrs stable 4.99fps 
5.1ghz = lock on test start

Adaptive voltage 1.300v x264 stress test
5.1ghz = 1min bsod

Adaptive voltage 1.325v x264 stress test
5.1ghz = 5min bsod

Adaptive voltage 1.350v x264 stress test
5.1ghz = 89-90-91-84 1hr stable 5.08fps
5.2ghz = bsod

Adaptive voltage 1.375v x264 stress test
5.2ghz = bsod
   

Adaptive voltage 1.400v x264 stress test
5.2ghz = bsod
         

***Put in case (watercooled)
Adaptive voltage 1.350v x264 stress test
5.1ghz = 75-70-75-68 2hr stable 5.04fp  14-20-16-16 drop
5.2ghz = bsod 2min

5.2 could be stable at 1.350 + 0.075 = 1.425v

5.2ghz x264 stress test
1.400v = 85-78-82-76 30min stable 5.13fp
1.375v = 83-75-79-72 30min stable 5.13fps <--- crashes after 30 min

5.3ghz x264 stress test
1.375v = bsod on test start
1.400v = bsod on test start             
1.425v = bsod on test start

5.252ghz @ 1.4v 15min bsod

Cache test 5.1ghz @ 1.375v
4.8 = 85-77-82-73 30min stable 5.11fps
4.9 = 84-77-82-73 35min stable 5.11fps
5.0 = 85-78-82-74 40min stable 5.11fps
5.1 = 84-77-82-75 28min stable 5.11fps

5.1/5.1 voltage drop

1.325v = bsod
1.330v = 2min bsod
1.335v = 4min bsod
1.340v = 7min bsod
1.345v = 15min bsod
1.350v = 82-75-80-72 2hr stable 5.10fps

FINAL 1.375v 5.1cpu 5.1 cache AVXoffset to -6 (4.5ghz)


-------------------------------------
Chip 2     

Adaptive voltage 1.200v x264 stress test
4.8ghz = 67-66-69-68 15min stable 4.77fps
4.9ghz = test start bsod

Adaptive voltage 1.225v x264 stress test
4.9ghz = 1min bsod

Adaptive voltage 1.250v x264 stress test
4.9ghz = 74-71-74-73 30min stable 4.88fps
5.0ghz = test start bsod

Adaptive voltage 1.275v x264 stress test
5.0ghz = 2min freeze

Adaptive voltage 1.300v x264 stress test
5.0ghz = 80-78-81-81 4hr stable 4.98
5.1ghz = bsod

Adaptive voltage 1.325v x264 stress test
5.1ghz = test start bsod

Adaptive voltage 1.350v x264 stress test
5.1ghz = 3min bsod

Adaptive voltage 1.375v x264 stress test
5.1ghz = 89-86-89-90 15min stable 5.07fps
5.2ghz = test start bsod
     

Adaptive voltage 1.400v x264 stress test                                                           
5.2ghz = test start bsod

Adaptive voltage 1.425v x264 stress test                                                           
5.2ghz = test start bsod

**** put board in case *****

Adaptive voltage 1.375v x264 stress test
5.1ghz = 93-88-94-94 3min bsod

Adaptive voltage 1.390v x264 stress test
5.1ghz = 93-92-95-95 3min lock

Adaptive voltage 1.325v x264 stress test
5.0ghz = 91-90-91-93 1hr stable 4.98fps
*repaste*
Adaptive voltage 1.325v x264 stress test
5.0ghz = 90-87-91-91 15hr stable 4.99fps 


4.6ghz cache = 89-86-90-90 3hr stable 4.99fps
4.7ghz cache = 89-86-90-90 30min stable 4.99fps
4.8ghz cache = bsod
4.7ghz cache = 90-86-91-90 4hrs stable 5.00fps

AVX Offset 2 4.8ghz = 10min prime stable high temps/volt
AVX Offset 5 4.5ghz = prime stock 1.2v


FINAL 1.325v 5.0cpu 4.6cache AVXoffset to -5 (4.5ghz)



-------------------------------------
Chip 3   

Adaptive voltage 1.200v x264 stress test
Note: CPUZ showing 1.248 vs 1.216 on chip 1&2
4.8ghz = 73-76-77-78 60min stable 4.78fps
4.9ghz = test start bsod

Adaptive voltage 1.225v x264 stress test 
Note: CPU showing the same as above                                                         
4.9ghz = test start bsod

Adaptive voltage 1.250v x264 stress test                                                           
4.9ghz = 73-76-78-78 5min FAIL

Adaptive voltage 1.275v (1.280 cpuz) x264 stress test                                                           
4.9ghz = 73-76-78-78 10min bsod

Adaptive voltage 1.300 x264 stress test                                                           
4.9ghz = 81-84-85-86 60min stable 4.88fps
5.0ghz = test start bsod

Adaptive voltage 1.325 x264 stress test                                                           
5.0ghz = 2min bsod         

Adaptive voltage 1.350 x264 stress test                                                           
5.0ghz = 85-87-91-91 10min bsod   

Adaptive voltage 1.375 x264 stress test                                                           
5.0ghz = bsod           

FINAL 1.300v 4.8cpu 4.5cache AVXoffset to -3 (4.5ghz)



Bench testing and DELID of the 3 chips
http://imgur.com/a/DV9ut

Computer 1 (Corsair 800D waterloop)
http://imgur.com/a/tJG2i

Computer 2 (Phanteks Enthoo EVOLV ATX Tempered Glass)
http://imgur.com/a/llBhK

Computer 3 (Corsair 750D AIR)
http://imgur.com/a/2U09K
Last edited by ColeLT1 on Tue Jan 31, 2017 8:56 am, edited 1 time in total.
 
Chrispy_
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Re: Built and OCed 3x I7 - 7700k gaming rigs (4.9-5.2ghz)

Tue Jan 31, 2017 7:30 am

Nice. I make almost Identical notes to you when I push overclocks.

My most recent project was undervolting my RX480 when I got home on Sunday night. I was running 1200MHz@1000mv stable because I hadn't bothered doing in-depth incremental stability tests. After a couple hours of plotting the sweet spot in the frequency/voltage curve, I was long-term stress testing a 1275@935mv (the memory undervolt is the limiting factor) and that means I've broken the sub-100W barrier with an overclocked 1.25GHz RX480.
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ColeLT1
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Re: Built and OCed 3x I7 - 7700k gaming rigs (4.9-5.2ghz)

Tue Jan 31, 2017 8:00 am

Nice results! It's always a good feeling when you can drop your temps and increase performance over stock settings.

I forgot to mention this, at stock settings, Chip 1 & 2 were 1.214v chips (in cpuz) while chip 3 was 1.246v (and could not break 5.0ghz).

Also going from 4.9ghz 4970k to this chip (even before I overclocked it) was a huge improvement in minimum frames on 2 games I play. ESO in crowded cities would always get "jumpy" with a minimum FPS around 30, now around 52. Borderlands 2, maxed settings (including Physx) also followed the same trend, no more 20-30fps brawls, double that. The only thing that changed was the processor/board, RAM went from ddr3 2133 to ddr4 3600, and a SATA SSD to M.2. Both of these games when they dipped down to low fps, dropped to low CPU and GPU usage in afterburner, I'm thinking memory speed is the factor.
 
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Re: Built and OCed 3x I7 - 7700k gaming rigs (4.9-5.2ghz)

Tue Jan 31, 2017 8:33 am

Heck of a nice OC you got there Cole, congrats. Glad you can objectively see the difference, too. :)
I do not understand what I do. For what I want to do I do not do, but what I hate I do.
 
the
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Re: Built and OCed 3x I7 - 7700k gaming rigs (4.9-5.2ghz)

Tue Jan 31, 2017 8:50 am

Did you delid these chips? Could help with stability by providing more efficient heat transfer.
Dual Opteron 6376, 96 GB DDR3, Asus KGPE-D16, GTX 970
Mac Pro Dual Xeon E5645, 48 GB DDR3, GTX 770
Core i7 3930K@4.2 Ghz, 32 GB DDR3, GA-X79-UP5-Wifi
Core i7 2600K@4.4 Ghz, 16 GB DDR3, GTX 970, GA-X68XP-UD4
 
ColeLT1
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Re: Built and OCed 3x I7 - 7700k gaming rigs (4.9-5.2ghz)

Tue Jan 31, 2017 8:53 am

the wrote:
Did you delid these chips? Could help with stability by providing more efficient heat transfer.


Yep, got pictures of it too, check them out!

Bench testing and DELID of the 3 chips
http://imgur.com/a/DV9ut

Computer 1 (Corsair 800D waterloop)
http://imgur.com/a/tJG2i

Computer 2 (Phanteks Enthoo EVOLV ATX Tempered Glass)
http://imgur.com/a/llBhK

Computer 3 (Corsair 750D AIR)
http://imgur.com/a/2U09K
 
DPete27
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Re: Built and OCed 3x I7 - 7700k gaming rigs (4.9-5.2ghz)

Tue Jan 31, 2017 10:09 am

I wish I could build someone even one system with a budget like that.  You got 2 (plus your own).  Lucky dog.
Main: i5-3570K, ASRock Z77 Pro4-M, MSI RX480 8G, 500GB Crucial BX100, 2 TB Samsung EcoGreen F4, 16GB 1600MHz G.Skill @1.25V, EVGA 550-G2, Silverstone PS07B
HTPC: A8-5600K, MSI FM2-A75IA-E53, 4TB Seagate SSHD, 8GB 1866MHz G.Skill, Crosley D-25 Case Mod
 
ColeLT1
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Re: Built and OCed 3x I7 - 7700k gaming rigs (4.9-5.2ghz)

Tue Jan 31, 2017 4:27 pm

DPete27 wrote:
I wish I could build someone even one system with a budget like that.  You got 2 (plus your own).  Lucky dog.


Haha, it wasn't that bad. The full build (750D) was around $1900, the rest were much cheaper. My CPU/RAM/MOBO upgrade was about $680 and I am ebaying my 4970k, RAM, and a unused SSD (the board is already gone), to hopefully in the end recoup about all but a couple hundred. Honestly though I spent the last of my old mined bitcoins on all of this... well I have $10 left haha (10.227mBTC).

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