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AMD Phenom OC/Unlocking Help!

post #1 of 9
Thread Starter 
Greetings overclockers,

Have just purchased a Phenom x2 550 BE cpu and ASRock A790GXH/128M

Upgraded from an Althon x2 6000+ (3.0ghz Dual Core) & ASRock ALiveNF4G-DVI

Hope i made a good choice, obviously taking a risk on this cpu hoping i can get an unlock of the extra cores (couldnt afford the sandybridge jump).

Haven't unlocked/oc'd any cpu before so i just thought id ask you guys if you have any advice to share. The mobos southbridge is SB750. Supports CPU upto 140w, Includes AMD Overdrive with ACC and Untied Overclocking Technology.

I really dont know anything about RAM timers? timings? and if certain speeds of ram are better for OC then others. I currently have 2gig of DDR2-533 from my old machine. The new board can suppport 533 to 1066. If im planning to OC which ram would be best 800 / 1066? or do you think i should just keep the 533 and just add an extra 2gig. How does the ram effect the CPU oc?

I have a HyperMaster CPU Fan and Thermaltake Tr2-550pp (550w) ps. Any advice with ram timing? and unlock/oc settings appreciated!
post #2 of 9
well for one am3 boards usually run DDR3 now ddr3 comes in 1066 and 667mhz, but ddr2 likely won't work. there is not a particular ram speed that is inherently better for OCing. What you might be thinking of is that when trying to do a heavy OC with just the ref clock or FSB it is often necessary to drop the ram speed by one increment to keep it close to the stock speed. Now I don't have much experience with core unlocking but it sounds like you should be able to do it with that bios. with the BE and that mobo you should be able to get at least 3.6GHz probably more. I wouldn't mss with your ram timings but get some ddr3 they are really cheap now. and first just try OCing with the multiplier as that is simpler than using the FSB or a combination.
Sandy Thunder
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CPUMotherboardGraphicsRAM
i7-3930k C1 4.6GHz @1.344v Sabertooth X79 2x EVGA GTX 560 Ti SC SLI 900/2106 Dominator 1866 16GB 9-10-9-27 
Hard DriveHard DriveCoolingOS
Crucial M4 64GB 'Cuda 320GB XSPC Rasa 750 RX240 push/pull + Alphacool UT60 ... Win 7 Pro x64 
MonitorMonitorMonitorKeyboard
Asus VE198D 19" Samsung 920NW 19" Samsung 906BW 19" Logitech G510s 
PowerCaseMouseMouse Pad
Corsair HX850M Carbide 400R Cyborg M.M.O. 7 Corsair MM200 
AudioOther
Bose Music Monitor Nuforce Icon HDP 
CPUMotherboardGraphicsRAM
Phenom II x6 1090T BE Sabertooth 990FX Radeon HD 5770 1GB Corsair Veangence Blue 
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WD Caviar Black 1TB  Lite ON 16x DVD-R/RW ThermalRight Silver Arrow Windows 7 Professional 64 bit 
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Syncmaster 921BW 19" & Syncmaster 965 19" and S... Apple aluminum wired keyboard Corsair TX650 Silverstone TJ05 with window and thermal contro... 
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logitech mx air None Monsoon MM-700 
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Sandy Thunder
(18 items)
 
QuickSilver X1
(15 items)
 
 
CPUMotherboardGraphicsRAM
i7-3930k C1 4.6GHz @1.344v Sabertooth X79 2x EVGA GTX 560 Ti SC SLI 900/2106 Dominator 1866 16GB 9-10-9-27 
Hard DriveHard DriveCoolingOS
Crucial M4 64GB 'Cuda 320GB XSPC Rasa 750 RX240 push/pull + Alphacool UT60 ... Win 7 Pro x64 
MonitorMonitorMonitorKeyboard
Asus VE198D 19" Samsung 920NW 19" Samsung 906BW 19" Logitech G510s 
PowerCaseMouseMouse Pad
Corsair HX850M Carbide 400R Cyborg M.M.O. 7 Corsair MM200 
AudioOther
Bose Music Monitor Nuforce Icon HDP 
CPUMotherboardGraphicsRAM
Phenom II x6 1090T BE Sabertooth 990FX Radeon HD 5770 1GB Corsair Veangence Blue 
Hard DriveOptical DriveCoolingOS
WD Caviar Black 1TB  Lite ON 16x DVD-R/RW ThermalRight Silver Arrow Windows 7 Professional 64 bit 
MonitorKeyboardPowerCase
Syncmaster 921BW 19" & Syncmaster 965 19" and S... Apple aluminum wired keyboard Corsair TX650 Silverstone TJ05 with window and thermal contro... 
MouseMouse PadAudio
logitech mx air None Monsoon MM-700 
  hide details  
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post #3 of 9
Whatever you do, get those VRMs cooled first...
post #4 of 9
the board he picked is ddr2 (am2/am2+/am3)
it will work just fine with his ram

if the cpu is a be, just raise the multiplier, it will keep the ram and bus speeds at stock

as xd suggests, a vrm cooling kit would be a good idea on that board

http://www.newegg.com/Product/Produc...82E16835708012
post #5 of 9
Thread Starter 
wasnt sure what VRM's were, so did a quick search on google, guess whos the top link ^^

http://www.google.co.uk/search?q=VRM...ient=firefox-a

i'll check it out and thanks for the pointers guys. just taking a look now at which hard-drive / ram i should get to benifit this rig without getting to costly.

wow those OCZ RevoDrive3 X2 just look ridiculous, do u guys remember the hyperdrive5? but realisticly, for a hard-drive im looking at either (note sata2 and ddr2 board)
- OCZ Vertex 2 50GB 2.5" SATA-II - £60
- Samsung SpinPoint F1 160GB - £36

If i find the cash i'd definatly fork out for the SSD, never had one before just been drueling behind windows for several years so would like to give one a shot. its just a little frustrating that the sata3 ssds are almost the same price as the sata2's with almost double the performance. I quite like the look of the spinpoints i was hoping they would have come down in price a little more but if anything they seem to be increasing in price. at the end of the day either one is going to be alot better then my current (HDTune) 55MB/s drive. Definatly leaning towards the SSD despite staring at great value sata3 SSD's in comparison.

and for ram either
- Kingston HyperX 4GB (2x2GB) DDR2 1066 Dual Channel - £50
- Komputerbay 4GB (2x2GB) DDR2 1066 Dual Channel - £34

Some great reviews of the Kingston HyperX, people are saying its stable good runner with great tweaking capabilities. I would really rather save a few bucks here tho and get the cheaper ram but i could do with someones oppinion on this.

so if i had to choose, to take the cheaper HD (spinpoint) but have the Kingston Ram, or take the Vertex 2 SSD and the cheaper ram, which would you go for? any advice appreciated. is their much difference between the kingston ram and the cheaper brand shown here?

ps thx for bringing the VRMs topic to my attention, as my board is phase 4+1 without heatsink (i'm just looking at what my limitations might be) could i get away with unlocking the cpu without any oc'ing? or is this still risky business without any additional VRM cooling? i know this may sound silly, but an instructional video of how/where to apply VRM heatsink would sit nicely in your thread xd_1772, just a thought. how many MOS-C10's would i need? 10 in a pack seems a little much. sry for million and 1 questions, ive just been editing ^^

do you think these would be appropriate for VRM cooling, their a little on the cheaper side
- Aluminum Memory Chip Cooler - £4
in comparison to:
- Enzotech RAM-cooler MOS-C10 - £11
Edited by laffo16 - 10/28/11 at 7:30pm
post #6 of 9
if you can return the mobo for a ddr3 am3/am3+ board the price difference from ddr2 to ddr3 will make up for it

if your in the uk, try www.ebuyer.com
Edited by ffejrxx - 10/28/11 at 10:26pm
post #7 of 9
Thread Starter 
thx for the suggestion ffejrxx, i picked up the board from auction for £25 (perhaps i was a little hasty) so i would need to re-list it to get rid of it, the price of DDR2 1033 is a little daunting but after some consideration, i'm willing to cut my loses and stick with the DDR2 / Sata2 board and just try to make do the best i can.

im still weighing up wether to get a regular HDD or an SSD with this board, and sry to re-iterate but would this Aluminum Memory Chip Cooler - £4 be ok for VRM cooling?
post #8 of 9
those heatsinks should work
mount them on the transistors between the back panel and the cpu
post #9 of 9
Thread Starter 
thanks 4 your help ffejrxx
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