Overclocking is the process of forcing something to run at a speed higher than the manufacturer's intended specifications.

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Higher voltage requirement for lower clock frequency

Is there any reason for a CPU to require a higher Vcore to achieve stability when running at a certain speed, than the Vcore that the same chip requires for stability when running at a higher speed? ...
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2answers
3k views

How to optimize PLL voltage

I am overclocking my Core i7 (Ivy Bridge 3770K), aiming for a moderate overclock. Currently I have it easily stable at a pleasant 4.4GHZ - BCLK defaulted at 100.00MHz, with the multiplier set to x44. ...
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3answers
130 views

Am I doing the right thing to overclock this?

This is a follow up to this question. I bought the motherboard mentioned in the question and a 2133 MHz RAM that does figure in the memory compatibility sheet of the board. After assembling it runs ...
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1answer
2k views

Why is GPU core clock cutting itself in half?

I'm using Afterburner to "natively" overclock a 7950, having used the "-xcl" option. From what I understand, this bypasses the need for unofficial Afterburner overclocking, and instead unlocks the ...
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0answers
807 views

Is it possible to overclock the polling rate for a wireless mouse?

I have a Logitech Performance Mouse MX -- a wireless laser mouse. From a diagnostic program, I can see that the polling rate is 125Hz. I'd like to overclock this to 500Hz (or however higher it can go ...
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1answer
545 views

Is “limited overclocking” supported by Ivy Bridge Xeon?

Intel Core i5 and i7 desktop processors in the Sandy Bridge and Ivy Bridge families support limited overclocking, where you can push the turbo boost multiplier to 4 bins above the standard. For ...
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1answer
65 views

Can I use an EVGA OC utility on a ZOTAC GPU?

EVGA has a very nice comprehensive utility while ZOTAC.. not so much. The specs for the two cards (EVGA vs ZOTAC) are not far off (660 Ti) so it seems plausible that one utility would work for the ...
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2answers
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1.35 V RAM in a 1.5 V system - Will it fry or overclock?

The general question is: When installing low voltage RAM in a board that outputs a higher voltage to the memory module, will this fry the RAM or will it be like overclocking it? My specific case is: ...
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318 views

Prevent i7 from overclocking while on battery

I've been bringing my laptop to tutorials and lectures lately and I've noticed sometimes my CPU clocks up from 1GHZ to 3.2 GHZ which cuts my estimated battery life in half, and spins the fan up pretty ...
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5k views

What exactly does “(OC)” mean in products description

Note: this is not a shopping recommendation request I want to buy a nice and fast RAM and a motherboard that supports it. Lets say that I would want to take this RAM (2400MHz), and put it into this ...
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4answers
3k views

Is overclocking RAM worth it? [closed]

I am going to purchase a motherboard that supports up to DDR3 2400(O.C.). I have seen things saying that overclocking RAM is not worth it. Is it worth it to buy memory that is rated for DDR3 2400 ...
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242 views

AMD Overdrive Triangle Artifacts all over screen

I was in AMD Catalyst Control Centre (CCC) and saw the AMD Overdrive function so me thinking this could cause no harm I messed with the settings. I didn't put the settings up high at all. I then click ...
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2k views

How can I overclock my 8400GS to its limit without making the driver crash?

Nvidia GeForce 8400gs EVGA 512MB(It comes with a small fan) I know this isn't the best card to overclock, but adding 200Mhz really helped me with 15+fps on a game and I was wondering if how can I ...
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1answer
338 views

My graphics card temperature is always the same?

Even after I overclocked it? Seems really odd it stays on the range of 45-48 Celsius. before overclock After overclocking I'm scared that the number is not correct and my card is frying.. why ...
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1answer
480 views

Is my Nvidia 8400GS overclocked? If not, how do I do so?

Specs of the 8400gs My card I'm trying to play a game and I'm only getting 20~ fps with everything set on low. I know this isn't the best card for gaming, but it's all I have :/
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Overclocking a nVIDIA GTX 660M GPU?

I have a MSI GE60 0ND laptop with a GTX 660M GPU. When I play games like Minecraft or Portal 2, the core clock is stable at 835 MHz. Recently I tried to overclock it using MSI Afterburner but it ...
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1answer
87 views

Watercooling two HD7970

I want to watercool my two HD7970 cards. Would a single 240 rad (e.g., xspc rs240) be enough? Currently I'm running very gpu-intensive tasks and the cards are overheating (85+). The case is corsair ...
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1answer
706 views

overclock atom n2800 CPU

I have a netbook (EeePC 1025C) with atom n2800 1.86GHZ CPU. I tried to use SETFSB to overclock, but I can't find the required 9LPRS432AGLF clock generator. In the BIOS there is no overclock option ...
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163 views

OC'ing a Sapphire 7950, problems with memory clock

I bought a new rig with sapphire radeon 7950 flex w/ boost. Good scores initially in 3dmark 11, around 7300 stock. Problem is, as soon as i start overclocking, issues arise. the core clock is at 860, ...
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1answer
349 views

How do I overclock my RAM?

I just built a pretty awesome computer on a i2700k Sandy Bridge processor and am pretty happy with it thus far. By just changing the multiplier, I have things fairly stable at 4.6 GHz on air, moving ...
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2answers
5k views

what are the rules for SLI ( GTX 550 Ti )

I got ASUS GTX 550 Ti and I want to SLI it with another graphic card. I heard that not all graphic cards are good idea to SLI, (or not all combinations) because sometimes the final performance could ...
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1answer
711 views

Is it possible to overclock a 2011 i7 macbook pro

I am just wondering if it is possible to overclock a 2011 i7 2.4 macbook pro? Either with software or if there is other ways of doing it.
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How does one calculate voltages for overclocking? [closed]

So, all I know is voltage and clock have something to do with each other. Unstable if too low voltage Too high voltage, and too much heat. or higher voltage + lower clock may heat less than that ...
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2answers
115 views

Serious voltage and temperature problems

My computer has been acting up when I play games so I wanted to look into why. Issue 1: GPU Temp According to afterburner and speedfan my 8800GTX idles at 90 degrees and then when playing games ...
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711 views

Core i3770k running too hot?

I just installed a Core i7 3770K. I have a Corsair H60 Hybrid CPU cooler with fans on both sides of the radiator for a push/pull configuration. I have the airflow for the radiator pulling in air from ...
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271 views

Why is the clock speed readout greater than the maximum?

(click for full-size image) What is this madness? (I'm aware that the top number refers to the non-Turbo Boosted clock speed, but what of the others?)
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323 views

Possible SSD failure after overclock

I (foolishly) attempted an overclock on my newly-upgraded (new mobo and SSD) rig, and now I cannot boot. The relevant components: AMD Phenom II X4 965 - 3.4Ghz (overclocked 10%) Kingston HyperX DDR3 ...
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765 views

Overclocking the E-350 APU on Linux

Is there any way to over/underclock or change the voltages of the AMD E-350 APU on Linux?
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Will overclocking your PC with no internet access screw up the system time?

Let's say you have a PC which is not connected to a time server, so it has no external methods of keeping track of time. You turn the machine on, and set the time and date in the BIOS. Then you ...
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6answers
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Can overclocking really break hardware?

My question may seem dumb, but, really, I want to think about it objectively. Let's first say that I'm not expecting to hard overclock a computer (ie. doubling the clock of the CPU), but I'd go by ...
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1answer
199 views

Testing watercooling system under load

I recently built a new system based on the Intel Core i7 3820K. When I purchased the chip, the salesman informed me that the new intel chips no longer include a thermal solution of any kind. After ...
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Overclocking: Is my gpu too hot?

I have a radeon hd 6670, and I have overclocked the GPU clock to 850 MHz and the memory clock to 1040 MHz. I then ran Diablo 3 with SpeedFan running in the background to check the heat of the GPU, and ...
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600 views

Overclock Failed

This morning when I tried to turn on my computer, the monitor would not display anything. The computer is on, but no UI on the monitor and no beep. I turned off the computer and turn it back on ...
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1answer
816 views

Is there any way to limit the turbo boost speed / intensity on i7 lap?

I've just got a used i7 laptop, one of these overheating pavilions from HP with quad cores. And I really want to find a compromise between the temp and performance. If I use linpack, or some other ...
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1answer
4k views

Underclocking without BIOS option

I have never over/under/downclocked my laptop, however it is seriously suffering from overheating. I have cleaned it out and am running the fan at full speed the whole time. I also have turned the ...
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2answers
898 views

Undervolting & Overclocking the Llano A6-3400M

The AMD A6-3400M comes with a significantly higher stock voltage than is needed to operate stably. Has anyone tweaked and stress tested all the P-states to lower voltages? I've stress tested the ...
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1answer
188 views

H61M-P23 B3 With I5 2500k - Is the multiplier locked?

I have seen a couple posts in some random places that say you cannot use an unlocked processor (K) with the 'H61M-P23 B3' motherboard. Can anyone verify this with a reference or explain their ...
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1answer
225 views

Dual channel the same in CMZ16GX3M4A1600C9 or 4 CMZ4GX3M1A1600C9?

I'm trying to decide between buying a 16GB (CMZ16GX3M4A1600C9) kit or 4 individual 4GB modules (CMZ4GX3M1A1600C9). For some reason the place I'm getting them from (not newegg) its cheaper to buy the ...
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1answer
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Is it smart / possible to overclock a laptop?

This may sound kind of dumb but I curious. I have a Lenovo T400 laptop with an Intel T9400 CPU. Would it be possible to overclock my notebook? Would it be a really dumb thing to do? I would ...
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1answer
288 views

GPU running underclocked / under normal speed?

I have tried to overclock my card. Seemingly it worked, and the GPU-z shows the OC speed (see GPU3.png). However, current readings are REALLY far from the normal speed of the GPU. That's what I can't ...
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1answer
717 views

Overclocked Intel Core 2 Duo E4300, what now?

I have overclocked Intel® Core™2 Duo Processor E4300 CPU. I changed FSB from 200 to 220. Multiplier is x9. The old core speed was 9 x 200 = 1800 GHz. Now it's 1980 GHz. I runed memtest to 20 passes ...
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415 views

Overclocking GPU

I am running a AMD Radeon HD 3650 Graphics Card. My Graphics Card Software (Catalyst) came with overclocking software to overclock my GPU. I have a few questions though: How bad for my GPU is ...
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Is overclocking legal? [closed]

Is overclocking your CPU and GPU classified as being legal ? If so, why don't manufacturers make overclocking easier so that just about anyone is able to play around with it ? - at own risk of course. ...
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0answers
593 views

How can I overclock my Pentium 4? [duplicate]

Possible Duplicate: How to Overclock a Dell Inspiron 531? How to overclock Dual-Core CPU E5200? Lacking options in BIOS? I have these specs from Everest: CPU Properties CPU Type - Intel ...
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2answers
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What should I consider to figure out the power needs for my PC?

I have opened up my tower and looked at the power supply case and all the numbers on it. I am very lost. I want to install a second graphics card into my machine so that I can connect a second ...
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How to get to BIOS with new faster memory

I built my machine in 2008, it has: mobo: MSI P45 Diamond CPU: Intel Q9450 RAM: 2GB (2 x 1GB) DDR3 1333 and various and sundry additional parts that I don't think have anything to do with my ...
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1k views

Overclock and Underclock graphics card using Registry Keys [closed]

Is it possible to use the registry to over clock or under clock a graphics card?
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6k views

How do I flash my RAM's SPD to make it work with a MacBook Pro?

I have an early 2011 17" MacBook Pro (MacBookPro8,3). I opted for the CPU upgrade (2.3 GHz), but decided to put in the extra memory myself. I briefly checked that the Intel specifications stated that ...
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1answer
6k views

Can I overclock an ATI Mobility Radeon HD 4250? If so, how?

Can I overclock ATI Mobility Radeon HD 4250? If so, how? My laptop is a Dell M5010 (aka 15R) with AMD Phenom II N850 69°C Caspian 45nm Technology, with 8GB Dual-Channel DDR3 @ 665MHz (9-9-9-24).
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Is it better to use an offset or manually set CPU voltage (with respect to CPU longevitity)?

The Background: I recently built a new computer, and I'm working with the ASUS P8Z68-V Pro motherboard and Intel i7 2600k processor. While this question does not pertain specifically to my hardware, ...