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i7 4790k only shows as 2 physical cores and 4 threads...

Volptar
By Volptar
in Troubleshooting
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Hey all, long time lurker, first time poster.  I'm having an issue with my intel stuffs (I'm normally an AMD man, but had to give Intel a shot).

 

I have a Gigabyte GA-z97x-ud5h mobo, intel i7 4790k (stock everything), 8GB Gskill ddr3 1600mhz, dual Asus Radeon 7850 in crossfire, OCZ 700w power suppy, Swiftech h220x water cooler.  This rig is fairly new only had it for about two or so weeks.  

 

It was working great, and then yesterday I installed the swiftech water cooler on it.  Boot took a little longer than normal, but I didn't think anything of it. All threads were showing in the gadget I'm using.  So I check temps, start to run some stability tests and torture test to see how the water cooler is doing.  I decide to run prime 95 small ffts with 8 threads.  As soon as I hit start the computer shuts down immediately.  I attempt again, same result.  By this point I haven't noticed any core issues.  I run some test, check aida 64 torture test which works fine and basically ignore it because it is stable in other tests.  I downloaded RealTemp 3.7 to see temps and this is when I notice that I am only showing 2 core temps and eventually I realize that CPUz only shows 2 cores and 4 threads..

 

I've done everything bios wise all the way up to flashing the bios to try and resolve the issue.  I'm considering pulling the CPU out and sending it back to newegg as defective.  Has anyone heard of this issue or got any ideas on how to fix (or if it can be fixed).  Even the Intel Processor Diagnostic Tool is showing the processor as working fine..

 

Some views for info:

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i dont no what would have caused that Intel put the wrong name on a i3 lol

l Intel Core i7 4790K @ 4.5Ghz l Asus VII Ranger ROG l MSI GTX 970 @ 1555MHz l 


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It could be a faulty processor !

 

If you have a bios update then install the latest bios and try again.......

otherwise get a replacement.

FX 6300 @ 4.2 Gigahurtz 1.325V ,  ASRock 970 Extreme 4 mobo  ,  Kingston Hyperx Blu 2X4GB @1600Mhz  , Asus GTX 960 DCU ii Black OC  , Hyper 212 Evo , Samsung 850 Evo 250 GB , WD 1 TB caviar Green , Xonar DG sound card , Seasonic M12ii Evo 620W PSU , Corsair 200R case ,4 random case fans.

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sounds to me like its to do with the fact you mounted your water cooler wrong and ran a stress test and fried the cpu :P

CPU 5900x| GPU 3080ti FE| MOBO MSI MPG CARBON MAX| RAM 32GB VENGENCE PRO 3200Mhz| STORAGE Samsung 980 Pro 1TB,2X WDSN750,4TB Seagate Barracuda| COOLING 1x Corsair 360mm XR7 54mm Radiator,1x EK-CoolStream PE 360mm Radiator| GPU Block: Corsair Hydro X Series, XG7 RGB| CPU Block: Corsair Hydro X Series, XC5 RGB| Fittings: EK-Torque STC & Corsair Hydro X Series XF| Pump/Res: EK-Quantum Kinetic TBE 300 D5| Tubing: Corsair Hydro X Series XT Softline| Liquid: Corsair Hydro X Series XL5 Clear| Fans: 10x Corsair SP120 RGB

 

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I would boot into Linux from a USB drive to confirm.

Good call, I'm gonna give that a try.

 

It could be a faulty processor !

 

If you have a bios update then install the latest bios and try again.......

otherwise get a replacement.

already re-flashed the bios with the latest version, also the mobo has dual bios capability so I have tried both.

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Open up msconfig (Start > type "msconfig" > hit enter)

Go to the Boot tab and hit Advanced options

Check to make sure the number of processors (cores) isn't limited to 2. Max it out / uncheck it.

 

a156199e51.png

e39ea5e106.jpg

 

Hopefully that helps.

Abigail: Intel Core i7-4790k @ 4.5GHz 1.170v / EVGA Nvidia GeForce GTX 980 Ti Classified  / ASRock Z97 Extreme6 / Corsair H110i GT / 4x4Gb G.Skill Ares 1866MHz @ CAS9 / Samsung 840 EVO 250Gb SSD / Seagate Barracuda 1TB 7200RPM / NZXT H440 Blue / EVGA SuperNOVA 750w G2

Peripherals: BenQ XL2411z 24" 144hz 1080p / ASUS VG248QE 24" 144Hz 1080p / Corsair Vengeance K70 RGB / Logitech G502 / Sennheiser HD650 / Schiit Audio Modi 2 / Magni 2 / Blue Yeti Blackout
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Hmm...that is weird. Definitely not normal. If you can't fix it I would definitely send it back and explain to Newegg the odd problem with it. It really does seem like Intel put the wrong name on the wrong CPU. If you can send it back to Newegg they can then get it checked by Intel and see what the problem is. It may just be defective. Newegg should give you a new non-faulty one back, they may even test it themselves. :huh:

@Volptar

ON A 7 MONTH BREAK FROM THESE LTT FORUMS. WILL BE BACK ON NOVEMBER 5th.


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Posted

have you also tried enabling all 4 cores via bios?

mY sYsTeM iS Not pErfoRmInG aS gOOd As I sAW oN yOuTuBe. WhA t IS a GoOd FaN CuRVe??!!? wHat aRe tEh GoOd OvERclok SeTTinGS FoR My CaRd??  HoW CaN I foRcE my GpU to uSe 1o0%? BuT WiLL i HaVE Bo0tllEnEcKs? RyZEN dOeS NoT peRfORm BetTer wItH HiGhER sPEED RaM!!! dId i WiN teH SiLiCON LotTerrY? yOu ShoUlD dEsHrOuD uR GPU. my SYstEm iS UNDerPerforMiNg iN WarzONE. can mY Pc Run WiNdOwS 11 ?? woUld BaKInG MY GRaPHics card fIX it? MultimETeR TeSTiNG!! aMd'S GpU DrIvErS aRe as goOD aS NviDia's YOU SHoUlD oVERCloCk yOUR ramS To 5000C18

 

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Ok so I took Name Taken's advice and booted into linux (never actually got all the way in because my keyboard wouldn't work so I couldn't hit enter to get into the demo..), but I reboot into Windows and now I show 4 cores and 8 threads. WTF?

 

cpuz.JPG

 

 

Open up msconfig (Start > type "msconfig" > hit enter)

Go to the Boot tab and hit Advanced options

Check to make sure the number of processors (cores) isn't limited to 2. Max it out / uncheck it.

 

Good advice, I had checked that after I noticed the issue and it only gave me options of 1-4 so I left it unchecked, which theoretically should automatically use all possible cores.

 

 

sounds to me like its to do with the fact you mounted your water cooler wrong and ran a stress test and fried the cpu :P

No. Although my status here is noob, I have mounted a few water coolers (not really complicated).  But I'll give you kudos on a good thought  ^_^

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Glad to see it's resolved :v

Abigail: Intel Core i7-4790k @ 4.5GHz 1.170v / EVGA Nvidia GeForce GTX 980 Ti Classified  / ASRock Z97 Extreme6 / Corsair H110i GT / 4x4Gb G.Skill Ares 1866MHz @ CAS9 / Samsung 840 EVO 250Gb SSD / Seagate Barracuda 1TB 7200RPM / NZXT H440 Blue / EVGA SuperNOVA 750w G2

Peripherals: BenQ XL2411z 24" 144hz 1080p / ASUS VG248QE 24" 144Hz 1080p / Corsair Vengeance K70 RGB / Logitech G502 / Sennheiser HD650 / Schiit Audio Modi 2 / Magni 2 / Blue Yeti Blackout
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