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How much OC can my board take?

post #1 of 3
Thread Starter 
It's about my cheap GA-A75M-S2V board.

I have already raised the bus speed to 140 with the CPU multiplier at 21 keeping the stock 2.9 on the CPU, but allowing the iGPU to hit 840 with the stock multiplier of 6. The memory multiplier is on 6.66 that putts my ram at the 1866 I previously used. My 6670 is also overclocked from the stock 800/900 to 900/1000. Everything is stable at this settings.

Now my next move would be to raise the CPU multiplier to 25 so I can hit 3.5 on the processor... but before I do that I'd like to ensure my board and PSU won't blow up.

So I am looking at a new PSU, the Thermaltake Litepower 450W that will provide me with more then 20A on the +12V compared to my current one and a new CPU cooler the Cooler Master GeminII + two of these that will provide a decent cooling to both the CPU and the VRMs.

But before I go with the purchase I'd like to hear a few opinions on whether is wort it or not, meaning will my motherboard be able to take the OC or it is very likely to blow up?
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Jupiter V
(18 items)
 
Pluto
(15 items)
 
 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-5820K ASUS X99-S NVIDIA GeForce® GTX 1080 Founders Edition Kingston HyperX® Predator 16GB DDR4-2400 
Hard DriveHard DriveHard DriveCooling
Samsung SM951 NVMe 256GB Samsung SSD 840 PRO 256GB WD Purple™ WD20PURX RAID 0 4TB Corsair Hydro Series™ H105 
OSMonitorKeyboardPower
Microsoft Windows® 10 Pro ASUS ROG SWIFT PG278Q ASUS ROG Claymore Antec® HCP-1000 Platinum 
CaseMouseMouse PadAudio
Corsair Carbide Series® Air 540 ASUS ROG Gladius ASUS ROG GM50 Sennheiser HD 449 
AudioOther
Creative A250 Xbox One Wireless Controller 
CPUMotherboardRAMHard Drive
AMD A8-3850 GIGABYTE GA-A75M-S2V Kingston HyperX Blu 4GB WD Blue 320GB 
Hard DriveCoolingOSMonitor
WD Green 1TB Cooler Master GeminII Windows 10 Pro BenQ EW2740L 
KeyboardPowerCaseMouse
A4TECH Game Master Keyboard KB-28G Thermaltake TR2 450W Cooler Master N200 A4TECH V-Laser Gaming Mouse F7 
Mouse PadAudioOther
A4TECH X7 Gaming Labtec Pulse 285 Logitech Rumble Gamepad F510 
CPUGraphicsRAMHard Drive
Intel® Atom™ Z3745 Intel® HD Graphics 2GB LPDDR3 32GB EMMC 
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post #2 of 3
that power supply only really puts out 400w on the 12v rail, not 450w. with your cheaper end power supplies a lot of the time the rated output is a mixture of your 12v rail and 5v rail giving a false idea of the total output. i would personally go for a power supply that has a single 12v rail of 40A or a psu that has a dual 12v rail each having 20A. that way you get 480w from your 12v.

the first thing that is going to give on that motherboard is the Mosfets which are those little surface mounted squares with the 8 little contact legs coming out. they are located to the left of the socket next to the chokes (chokes are the black cubes).

the reason these will give first is because they have no cooling apart from any air flow that travels directly over them, and being a 4+1 Phase board they will require to take more current than a board with more phases.

the best option to take without replacing the board is to get some heatsinks to place onto the mosfets to aid with removing their heat.

for doing that you can get these http://www.newegg.com/Product/Product.aspx?Item=N82E16835708009 wich just stick onto the top of the Mosfets and act as a heatsink. this option along with the cpu heatsink and power supply should improve your overclock a fair bit and decrease the risk of your board failing.
Finally Finished!
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Finally Finished!
(14 items)
 
  
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Intel i7 3930K Batch: 3135B495T Gigabyte X79 UD7 GTX 570 3-way SLi Corsair Vengeance 1600mhz CL9 
Hard DriveCoolingOSMonitor
60GB OCZ Vertex II / 3x 500GB Samsung Spinpoint EK Supreme HF Nickel, EK DCP4.0, Stealth GT 360... Windows 7 Ult 64bit Acer 22" G225HQ 
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Razor Lacosa Mirror Edition Silverstone Strider 1500w  Aerocool X-Preditor  CM Storm Sentinel Advanced 
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Razer Goliathus Speed edition 
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post #3 of 3
Thread Starter 
Thanks for the response Kal777

I know that the Thermaltake Litepower can provide 400W and not 450W on the both +12V rails combined, I just thought that will be more than enough for my system considering that my current PSU have only one +12V rail rated for 20A and I so far haven't experienced any stability issues.

As for a PSU with a single more powerful +12V rail the only ones available to me are the Thermaltake TR2 500W and Cooler Master Silent Pro M500 both slightly out of my budget but I think I can manage to get one of them if you think they are a better choice.

Also, are those mosfet heatsinks absolutely necessary if I have a fan directly blowing at them like I plan to with the GeminII. I mean I'll gladly add those it's just that I can't find some.
Jupiter V
(18 items)
 
Pluto
(15 items)
 
 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-5820K ASUS X99-S NVIDIA GeForce® GTX 1080 Founders Edition Kingston HyperX® Predator 16GB DDR4-2400 
Hard DriveHard DriveHard DriveCooling
Samsung SM951 NVMe 256GB Samsung SSD 840 PRO 256GB WD Purple™ WD20PURX RAID 0 4TB Corsair Hydro Series™ H105 
OSMonitorKeyboardPower
Microsoft Windows® 10 Pro ASUS ROG SWIFT PG278Q ASUS ROG Claymore Antec® HCP-1000 Platinum 
CaseMouseMouse PadAudio
Corsair Carbide Series® Air 540 ASUS ROG Gladius ASUS ROG GM50 Sennheiser HD 449 
AudioOther
Creative A250 Xbox One Wireless Controller 
CPUMotherboardRAMHard Drive
AMD A8-3850 GIGABYTE GA-A75M-S2V Kingston HyperX Blu 4GB WD Blue 320GB 
Hard DriveCoolingOSMonitor
WD Green 1TB Cooler Master GeminII Windows 10 Pro BenQ EW2740L 
KeyboardPowerCaseMouse
A4TECH Game Master Keyboard KB-28G Thermaltake TR2 450W Cooler Master N200 A4TECH V-Laser Gaming Mouse F7 
Mouse PadAudioOther
A4TECH X7 Gaming Labtec Pulse 285 Logitech Rumble Gamepad F510 
CPUGraphicsRAMHard Drive
Intel® Atom™ Z3745 Intel® HD Graphics 2GB LPDDR3 32GB EMMC 
OSMonitorPowerAudio
Windows 10 Home 8" Full HD (1920 x 1200) IPS display Li-ion 6400 mAh battery Dolby® Audio 
Other
WiFi 802.11 a/b/g/n, MiMo, Bluetooth® 4.0 
  hide details  
Reply
Jupiter V
(18 items)
 
Pluto
(15 items)
 
 
CPUMotherboardGraphicsRAM
Intel® Core™ i7-5820K ASUS X99-S NVIDIA GeForce® GTX 1080 Founders Edition Kingston HyperX® Predator 16GB DDR4-2400 
Hard DriveHard DriveHard DriveCooling
Samsung SM951 NVMe 256GB Samsung SSD 840 PRO 256GB WD Purple™ WD20PURX RAID 0 4TB Corsair Hydro Series™ H105 
OSMonitorKeyboardPower
Microsoft Windows® 10 Pro ASUS ROG SWIFT PG278Q ASUS ROG Claymore Antec® HCP-1000 Platinum 
CaseMouseMouse PadAudio
Corsair Carbide Series® Air 540 ASUS ROG Gladius ASUS ROG GM50 Sennheiser HD 449 
AudioOther
Creative A250 Xbox One Wireless Controller 
CPUMotherboardRAMHard Drive
AMD A8-3850 GIGABYTE GA-A75M-S2V Kingston HyperX Blu 4GB WD Blue 320GB 
Hard DriveCoolingOSMonitor
WD Green 1TB Cooler Master GeminII Windows 10 Pro BenQ EW2740L 
KeyboardPowerCaseMouse
A4TECH Game Master Keyboard KB-28G Thermaltake TR2 450W Cooler Master N200 A4TECH V-Laser Gaming Mouse F7 
Mouse PadAudioOther
A4TECH X7 Gaming Labtec Pulse 285 Logitech Rumble Gamepad F510 
CPUGraphicsRAMHard Drive
Intel® Atom™ Z3745 Intel® HD Graphics 2GB LPDDR3 32GB EMMC 
OSMonitorPowerAudio
Windows 10 Home 8" Full HD (1920 x 1200) IPS display Li-ion 6400 mAh battery Dolby® Audio 
Other
WiFi 802.11 a/b/g/n, MiMo, Bluetooth® 4.0 
  hide details  
Reply
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