Overclock.net › Forums › AMD › AMD CPUs › 7750 Black Edition
New Posts  All Forums:Forum Nav:

7750 Black Edition - Page 4

post #31 of 41
superpi and maybe cinebench if you have time. thanks.
post #32 of 41
Thread Starter 
Still struggling to get something stable over 3.3 without locking up in Orthos.... I've tried different combinations of CPU multi and ref. clock, but going over 3.3 is proving to be a challenge. The CPU temps, though, have not yet even gone up to 40C, according to HW Monitor.

15 x 220 with 1.375V vcore, 1.90V ram voltage with 5-5-5-18 timings (on auto) running at 880 MHz.... 9x NB multi and 9x HT multi.... ran nice and stable on Orthos for over 40 min. until I stopped it. Then I increased the ref. clock to 223.... it would start freezing again. I've tried raising vcore, and ram voltage; and also tried dropping the ram divider back to 667 with manual timings.... none of that seemed to help. I've played with the 16.5, 16 and 15 CPU multis, so I'll try the 15.5 to see if I have better luck with that one.

I have done a few SuperPi runs.... just for a comparison, the 5000 BE I had in this board at 3.3 GHz ran a 28.016.... the 7750 BE at 3.3 GHZ ran a 24.516.... and at 3.4 GHZ a 23.891.

And thanks flak4.... good luck to you as well.
1 l^st t!me
(10 items)
 
  
CPUMotherboardGraphicsRAM
assorted varies PNY XLR8 GTX 560 Ti Samsung DDR3-1600 
Hard DriveOptical DriveCoolingOS
sure one Megahalems / 120mm x 38mm  varied Windows & Linux 
PowerCase
yes! NZXT Source 530 
  hide details  
Reply
1 l^st t!me
(10 items)
 
  
CPUMotherboardGraphicsRAM
assorted varies PNY XLR8 GTX 560 Ti Samsung DDR3-1600 
Hard DriveOptical DriveCoolingOS
sure one Megahalems / 120mm x 38mm  varied Windows & Linux 
PowerCase
yes! NZXT Source 530 
  hide details  
Reply
post #33 of 41
can you hit 3.0 stable with a just a multi change to 15x? I'm interested in running 250x12 so my ram can run as close as 1066 as possible.
post #34 of 41
Thread Starter 
Quote:
Originally Posted by alwaysAMD View Post
can you hit 3.0 stable with a just a multi change to 15x? I'm interested in running 250x12 so my ram can run as close as 1066 as possible.
I ran mine up to 3.2 (16x multi) with stock vcore.... and it was stable as far as only running Orthos for 10-20 min. to test with.... so I don't think that 3.0 would be a problem.
1 l^st t!me
(10 items)
 
  
CPUMotherboardGraphicsRAM
assorted varies PNY XLR8 GTX 560 Ti Samsung DDR3-1600 
Hard DriveOptical DriveCoolingOS
sure one Megahalems / 120mm x 38mm  varied Windows & Linux 
PowerCase
yes! NZXT Source 530 
  hide details  
Reply
1 l^st t!me
(10 items)
 
  
CPUMotherboardGraphicsRAM
assorted varies PNY XLR8 GTX 560 Ti Samsung DDR3-1600 
Hard DriveOptical DriveCoolingOS
sure one Megahalems / 120mm x 38mm  varied Windows & Linux 
PowerCase
yes! NZXT Source 530 
  hide details  
Reply
post #35 of 41
Thread Starter 
Well, I'm still not having any luck getting a stable OC above 3.3.... absolutely anything above will just lock up on me. I've tried a combination of CPU multis and ref. clocks, with vcore anywhere from 1.325 to 1.450.... no luck. Ram timings are at either 5-5-5-18 or 5-5-5-15 running on the 800 or the 667 divider. Ram voltage has ranged from 1.9V to 2.0V. Chipset voltage has been set from 1.1V to 1.3V.... both the NB multi and the HT multi have been at 9x or 8x.

Once I get above 3.3, it will just freeze up on me.... no response from mouse, keyboard or monitor.... and I have to reset. And it will usually freeze within the first few minutes after I'm into the OS, stress testing or not, but it does happen eventually. The best I could manage so far is 3.321 on Orthos blend for just under an hour before it froze. Does anyone have some insight on what I'm missing here?.... is it the CPU's limit (I hate to think I've reached that already)? Board limitation? Not enough PSU? Corrupt OS? ........?

I'm thinking that I'm going to pull the 7750 off this board and give it a shot in my Biostar TA770. If anything, this is a good learning experience.... Phenoms definitely require more finesse to get a stable OC.
1 l^st t!me
(10 items)
 
  
CPUMotherboardGraphicsRAM
assorted varies PNY XLR8 GTX 560 Ti Samsung DDR3-1600 
Hard DriveOptical DriveCoolingOS
sure one Megahalems / 120mm x 38mm  varied Windows & Linux 
PowerCase
yes! NZXT Source 530 
  hide details  
Reply
1 l^st t!me
(10 items)
 
  
CPUMotherboardGraphicsRAM
assorted varies PNY XLR8 GTX 560 Ti Samsung DDR3-1600 
Hard DriveOptical DriveCoolingOS
sure one Megahalems / 120mm x 38mm  varied Windows & Linux 
PowerCase
yes! NZXT Source 530 
  hide details  
Reply
post #36 of 41
My 7750 seems to like 3.3ghz so far, it doesn't like 3.4ghz though... currently my core is 37C on load.

core speed: 3307
multiplier: 13.5
bus speed: 245
ht link: 1960
core v: 1.36
nb frequency: 1960 mhz
dram frequency: 490mhz
fsb : dram 1:2

any comments? suggestions to get a higher overclock?

EDIT: bah, just got an error on prime.
Edited by Aeloi - 1/2/09 at 10:31pm
post #37 of 41
Quote:
Originally Posted by alwaysAMD View Post
I want to know because I get around a 28s superpi with my current settings, yet I was reading a online bench of the 7750 and it only got 24s @ 3.5Ghz.
superPI doesn't work too good on AMD processors.
Ready 4 Skylake
(15 items)
 
   
CPUMotherboardGraphicsRAM
Intel i5 4690k 4.7Ghz @1.219v 24/7 Gigabyte Z97 Gaming 3 Sapphire Tri-X R9 290x G.Skill Ares  
Hard DriveHard DriveOptical DriveCooling
Samsung Evo 850 250GB Toshiba 3TB LOL Phanteks PH-TC14PE 
OSMonitorKeyboardPower
Dual Boot: Windows 10 Pro 64-bit / Xubuntu 16.04 QNIX QX2710 Evolution 2 OC'd to 110Hz CoolerMaster Quickfire Pro  XFX 850W Pro BE 
CaseMouseMouse Pad
NZXT H440 Monoprice Zowie AM steelseries QcK+ 
CPUMotherboardGraphicsRAM
Core 2 Duo E6600 Asus P5LD2-VM Sapphire HD 3870 512MB 2x1GB OCZ DDR2 800MHz 
Hard DriveOptical DriveCoolingOS
Seagate 500GB Lite-On 24x DVD burner Stock Windows 8.1 
MonitorKeyboardPowerCase
Sharp 47" TV Wireless keyboard/mouse combo Cheap Enermax 400W Banged up Coolermaster Elite 330 
Mouse
Touchpad 
  hide details  
Reply
Ready 4 Skylake
(15 items)
 
   
CPUMotherboardGraphicsRAM
Intel i5 4690k 4.7Ghz @1.219v 24/7 Gigabyte Z97 Gaming 3 Sapphire Tri-X R9 290x G.Skill Ares  
Hard DriveHard DriveOptical DriveCooling
Samsung Evo 850 250GB Toshiba 3TB LOL Phanteks PH-TC14PE 
OSMonitorKeyboardPower
Dual Boot: Windows 10 Pro 64-bit / Xubuntu 16.04 QNIX QX2710 Evolution 2 OC'd to 110Hz CoolerMaster Quickfire Pro  XFX 850W Pro BE 
CaseMouseMouse Pad
NZXT H440 Monoprice Zowie AM steelseries QcK+ 
CPUMotherboardGraphicsRAM
Core 2 Duo E6600 Asus P5LD2-VM Sapphire HD 3870 512MB 2x1GB OCZ DDR2 800MHz 
Hard DriveOptical DriveCoolingOS
Seagate 500GB Lite-On 24x DVD burner Stock Windows 8.1 
MonitorKeyboardPowerCase
Sharp 47" TV Wireless keyboard/mouse combo Cheap Enermax 400W Banged up Coolermaster Elite 330 
Mouse
Touchpad 
  hide details  
Reply
post #38 of 41
Don't mean to threadjack, but I always wonder about SuperPi results. Do they pertain to any real world situations, or is it simply bragging rights? I'd assume it can correspond to heavy number crunching, such as video encoding, but i'm not sure.
post #39 of 41
Quote:
Originally Posted by alwaysAMD View Post
Don't mean to threadjack, but I always wonder about SuperPi results. Do they pertain to any real world situations, or is it simply bragging rights? I'd assume it can correspond to heavy number crunching, such as video encoding, but i'm not sure.
Its just a decent benchmark, its a fairly good indicator of how fast a CPU is.

Even if some people say that it favors intel chips.

I mean back in the day of Pentium 4s with 3.2ghz with 2mb of L2, it still took them 36+ sec to do a 18 loops of 1Million digits. So as of right now, 3.0ghz intels are pushing 14-15 sec 1M, while 3.0ghz AMDs even with the 3mb L3 are still pulling only what 27-28 seconds.
Steam Machine
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570K @4Ghz ASrock z77 Extreme 4 R9 260 16gb G.Skill Ripjaw @1800MHz 
Hard DriveOptical DriveCoolingOS
Plata None Air Win7 
MonitorKeyboardPowerCase
23" Widescreen ACER Uberclocked!! Antec 550W Basiq Lian Li Custom 
MouseMouse Pad
W-i-P W-i-P 
  hide details  
Reply
Steam Machine
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570K @4Ghz ASrock z77 Extreme 4 R9 260 16gb G.Skill Ripjaw @1800MHz 
Hard DriveOptical DriveCoolingOS
Plata None Air Win7 
MonitorKeyboardPowerCase
23" Widescreen ACER Uberclocked!! Antec 550W Basiq Lian Li Custom 
MouseMouse Pad
W-i-P W-i-P 
  hide details  
Reply
post #40 of 41
Quote:
Originally Posted by alwaysAMD View Post
can you hit 3.0 stable with a just a multi change to 15x? I'm interested in running 250x12 so my ram can run as close as 1066 as possible.
I did that to OC a 9850, 250x12 just to use the ram; at the end i ended up checking Ram Latency and manually set it (both at BIOS, ASUS M3A78) and being able to run them as 1066.

Using cheaper Kingmax 1066, they could be read 5-5-5-18 at 800, but need to be set 6-7-7-25 at 1066, currently running at 7-7-7-25.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
9850 @ 3.1G M3A78-EM on broad + Up to 2 Matrox G200 MMS when needed DDR2-1066 
Hard DriveOptical DriveOSMonitor
Seagate Barracuda ES2 XP 32bit 24"x2 
KeyboardPowerCaseMouse
700w Coolermaster (cheap one) 
Mouse Pad
  hide details  
Reply
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
9850 @ 3.1G M3A78-EM on broad + Up to 2 Matrox G200 MMS when needed DDR2-1066 
Hard DriveOptical DriveOSMonitor
Seagate Barracuda ES2 XP 32bit 24"x2 
KeyboardPowerCaseMouse
700w Coolermaster (cheap one) 
Mouse Pad
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: AMD CPUs
Overclock.net › Forums › AMD › AMD CPUs › 7750 Black Edition