Overclock.net › Forums › AMD › AMD CPUs › Prime95 rounding error ..
New Posts  All Forums:Forum Nav:

Prime95 rounding error ..

post #1 of 17
Thread Starter 
Hello

So, i've been playing with some overclocking today, but after several unstable prime95 runs, where I received rounding errors, like "Fatal error: Rounding was 0.5, expected under 0.4"

I turned the settings back to stock, but I still received those errors. From what i've found in other threads regarding these errors, they usually indicate that more voltage is needed. However, all my settings are stock.

I even tried stock speed (200 x 16) at 1.5V, but the errors still occur, so I can't see it being a lack of voltage. The screenshot is at these settings ..

Btw, temps have never been over 52 degrees ..

Any experienced PII overclockers know what might cause this?
LL
...
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X4 955 C2 MSI 790FX-GD70 GTX570 Phantom 4 GB Patriot 1600 7-7-7-20 
Hard DriveOptical DriveOSMonitor
Samsung F3 1TB Does anyone care? Windows 7 64bit Dell SP2309W 
PowerCase
Corsair HX850W Lian Li PC-A05N 
  hide details  
Reply
...
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X4 955 C2 MSI 790FX-GD70 GTX570 Phantom 4 GB Patriot 1600 7-7-7-20 
Hard DriveOptical DriveOSMonitor
Samsung F3 1TB Does anyone care? Windows 7 64bit Dell SP2309W 
PowerCase
Corsair HX850W Lian Li PC-A05N 
  hide details  
Reply
post #2 of 17
Make sure your memory setting are good. TRC comes to mind and trfc value for the four sticks of ram.
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
1090t ASUS Sabertooth 990fx PNY GTX470 2x4g GSkill 1333 
Hard DriveOptical DriveCoolingOS
2x 500gig WD DVD ±RW Black TRUE Vista Ultimate SP2 
MonitorPowerCase
Gateway FPD2275 Corsair HX1000 Antec 1200 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
1090t ASUS Sabertooth 990fx PNY GTX470 2x4g GSkill 1333 
Hard DriveOptical DriveCoolingOS
2x 500gig WD DVD ±RW Black TRUE Vista Ultimate SP2 
MonitorPowerCase
Gateway FPD2275 Corsair HX1000 Antec 1200 
  hide details  
Reply
post #3 of 17
Thread Starter 
Well, the ram is running at the same speec and voltage as before the oc'ing.. All settings besides voltage and the first four timing settings are set to auto ..
...
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X4 955 C2 MSI 790FX-GD70 GTX570 Phantom 4 GB Patriot 1600 7-7-7-20 
Hard DriveOptical DriveOSMonitor
Samsung F3 1TB Does anyone care? Windows 7 64bit Dell SP2309W 
PowerCase
Corsair HX850W Lian Li PC-A05N 
  hide details  
Reply
...
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X4 955 C2 MSI 790FX-GD70 GTX570 Phantom 4 GB Patriot 1600 7-7-7-20 
Hard DriveOptical DriveOSMonitor
Samsung F3 1TB Does anyone care? Windows 7 64bit Dell SP2309W 
PowerCase
Corsair HX850W Lian Li PC-A05N 
  hide details  
Reply
post #4 of 17
It was prime blend stable at stock?
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
1090t ASUS Sabertooth 990fx PNY GTX470 2x4g GSkill 1333 
Hard DriveOptical DriveCoolingOS
2x 500gig WD DVD ±RW Black TRUE Vista Ultimate SP2 
MonitorPowerCase
Gateway FPD2275 Corsair HX1000 Antec 1200 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
1090t ASUS Sabertooth 990fx PNY GTX470 2x4g GSkill 1333 
Hard DriveOptical DriveCoolingOS
2x 500gig WD DVD ±RW Black TRUE Vista Ultimate SP2 
MonitorPowerCase
Gateway FPD2275 Corsair HX1000 Antec 1200 
  hide details  
Reply
post #5 of 17
Thread Starter 
Used to be, yes. Not anymore though ..
...
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X4 955 C2 MSI 790FX-GD70 GTX570 Phantom 4 GB Patriot 1600 7-7-7-20 
Hard DriveOptical DriveOSMonitor
Samsung F3 1TB Does anyone care? Windows 7 64bit Dell SP2309W 
PowerCase
Corsair HX850W Lian Li PC-A05N 
  hide details  
Reply
...
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X4 955 C2 MSI 790FX-GD70 GTX570 Phantom 4 GB Patriot 1600 7-7-7-20 
Hard DriveOptical DriveOSMonitor
Samsung F3 1TB Does anyone care? Windows 7 64bit Dell SP2309W 
PowerCase
Corsair HX850W Lian Li PC-A05N 
  hide details  
Reply
post #6 of 17
What is the temp safety point of the 955? That 52 degrees is 2-3 degrees below my Prime95 blend temps at 3.7 / 2400 cpu-nb.
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
1090t ASUS Sabertooth 990fx PNY GTX470 2x4g GSkill 1333 
Hard DriveOptical DriveCoolingOS
2x 500gig WD DVD ±RW Black TRUE Vista Ultimate SP2 
MonitorPowerCase
Gateway FPD2275 Corsair HX1000 Antec 1200 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
1090t ASUS Sabertooth 990fx PNY GTX470 2x4g GSkill 1333 
Hard DriveOptical DriveCoolingOS
2x 500gig WD DVD ±RW Black TRUE Vista Ultimate SP2 
MonitorPowerCase
Gateway FPD2275 Corsair HX1000 Antec 1200 
  hide details  
Reply
post #7 of 17
I suspect memory error; rounding errors at large FTTs usually indicate instability with memory. Try running a small blend; which mostly stresses the CPU. If you dont crash within a couple of hours, then the culprit is the memory.

Run memtest86 regardless

52 degrees is fine for your CPU, no reason for concern. You want to be 60 degrees or under
Mugendramon
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5 4670k ASrock Z87 Extreme6 R9 290 Crossfire Samsung 8GB DDR3 2133mhz 
Hard DriveHard DriveCoolingCooling
WD Black 1T Samsung Spinpoint F3 1 TB EK Supreme HF Rev 2.0  HW GTX 360 Rad 
CoolingOSMonitorPower
EK Acetal waterblock W7 64 bit Yamakasi Catleap Q270 2560x1440p Corsair AX850 
CaseAudio
Corsair 800D Creative Titanium HD  
  hide details  
Reply
Mugendramon
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5 4670k ASrock Z87 Extreme6 R9 290 Crossfire Samsung 8GB DDR3 2133mhz 
Hard DriveHard DriveCoolingCooling
WD Black 1T Samsung Spinpoint F3 1 TB EK Supreme HF Rev 2.0  HW GTX 360 Rad 
CoolingOSMonitorPower
EK Acetal waterblock W7 64 bit Yamakasi Catleap Q270 2560x1440p Corsair AX850 
CaseAudio
Corsair 800D Creative Titanium HD  
  hide details  
Reply
post #8 of 17
Memory erorr, I get thos when I try to take my memory past 1100
 
Draco Volans II
(11 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II x4 830 @4Ghz core /2.6Ghz NB Gigabyte MA790X-UD4P EVGA 970 2x4GB Ebay DDR2 at DDR762 5-5-5-15 
Hard DriveHard DriveHard DriveHard Drive
Seagate 500 GB 7200.12 (near dead) Hiachi Coolspin 2 TB (storage) (near dead) RAID0 2x Westren digital Caviar Blu... OCZ arc 100 240 GB SSD 
CoolingOSMonitorMonitor
Xiggy dark knight Windows 7 Ultimate x64 23" ASUS VH236H 1080p QINX QX2710LED 1440p 
KeyboardPowerCaseMouse
Kinesis advantage  XFX TS550 Antec 900 Razer deathadder 
Other
USB 3.0 PCIe card 
CPUMotherboardGraphicsRAM
Core i5-3210M HM77  GT 640LE  4GB soldered+ 8GB SO-DIMM 
Hard DriveOptical DriveCoolingOS
Samsung 840 EVO Slot loading Stock W7 x64 
MonitorKeyboardPower
1600x900 13.3" LCD Backlit 4200 mAh internal and 4800 mAh extended battery. 
CPUMotherboardGraphicsRAM
AMD Turion ML-40 with heatspreader attached HP laptop socket 754 motherboard with RS480M ch... IGP that I don't use 512 mb ddr 
Hard DriveOptical DriveCoolingOS
4 GB patriot USB 2.0 flash drive None, don't need it. Scythe Ninja Mounted with zip ties.  Pfsense 2.0.2 nanobsd 
OtherOtherOther
gigabit USB NIC Atheros WLAN NIC Many zip ties. 
  hide details  
Reply
 
Draco Volans II
(11 items)
 
 
CPUMotherboardGraphicsRAM
Phenom II x4 830 @4Ghz core /2.6Ghz NB Gigabyte MA790X-UD4P EVGA 970 2x4GB Ebay DDR2 at DDR762 5-5-5-15 
Hard DriveHard DriveHard DriveHard Drive
Seagate 500 GB 7200.12 (near dead) Hiachi Coolspin 2 TB (storage) (near dead) RAID0 2x Westren digital Caviar Blu... OCZ arc 100 240 GB SSD 
CoolingOSMonitorMonitor
Xiggy dark knight Windows 7 Ultimate x64 23" ASUS VH236H 1080p QINX QX2710LED 1440p 
KeyboardPowerCaseMouse
Kinesis advantage  XFX TS550 Antec 900 Razer deathadder 
Other
USB 3.0 PCIe card 
CPUMotherboardGraphicsRAM
Core i5-3210M HM77  GT 640LE  4GB soldered+ 8GB SO-DIMM 
Hard DriveOptical DriveCoolingOS
Samsung 840 EVO Slot loading Stock W7 x64 
MonitorKeyboardPower
1600x900 13.3" LCD Backlit 4200 mAh internal and 4800 mAh extended battery. 
CPUMotherboardGraphicsRAM
AMD Turion ML-40 with heatspreader attached HP laptop socket 754 motherboard with RS480M ch... IGP that I don't use 512 mb ddr 
Hard DriveOptical DriveCoolingOS
4 GB patriot USB 2.0 flash drive None, don't need it. Scythe Ninja Mounted with zip ties.  Pfsense 2.0.2 nanobsd 
OtherOtherOther
gigabit USB NIC Atheros WLAN NIC Many zip ties. 
  hide details  
Reply
post #9 of 17
Idk much about amd cpu's but i do know why that error happens.

This error happens because your voltage on your cpu is not high enough and also your ram voltage isnt high enough. Thats what i learned through my own testing.

I would increase the cpu and ram up my .2 volts.

And your motherboard northbridge could go up by .2 volts it will not hurt anything.

The cpu might need more but idk.
My Creation
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.4Ghz vcore 1.44v Asus P5Q Pro Turbo XFX GTX 260 Gskill ddr2 800mhz 
PowerCase
Corsair 750W NZXT hades 
  hide details  
Reply
My Creation
(13 items)
 
  
CPUMotherboardGraphicsRAM
Q6600 @ 3.4Ghz vcore 1.44v Asus P5Q Pro Turbo XFX GTX 260 Gskill ddr2 800mhz 
PowerCase
Corsair 750W NZXT hades 
  hide details  
Reply
post #10 of 17
Thread Starter 
I thought it was a matter of voltage as well, but my ram gets 1.7V as it's meant to, and as it has in the past. Will run some memtest86, since i doubt it's the cpu. 1.5V for stock speed can't be unstable ..

Reporting back when memtest is done, thanks for your help so far ..
...
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X4 955 C2 MSI 790FX-GD70 GTX570 Phantom 4 GB Patriot 1600 7-7-7-20 
Hard DriveOptical DriveOSMonitor
Samsung F3 1TB Does anyone care? Windows 7 64bit Dell SP2309W 
PowerCase
Corsair HX850W Lian Li PC-A05N 
  hide details  
Reply
...
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom II X4 955 C2 MSI 790FX-GD70 GTX570 Phantom 4 GB Patriot 1600 7-7-7-20 
Hard DriveOptical DriveOSMonitor
Samsung F3 1TB Does anyone care? Windows 7 64bit Dell SP2309W 
PowerCase
Corsair HX850W Lian Li PC-A05N 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › Prime95 rounding error ..