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I7-3770k power consumption problem

Last response: in CPUs
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February 10, 2013 1:41:00 PM

Here is my problem. I got a dell inspiron 660s and it's a slim case. It only have 220w power supply. Before I have a GT620 oem graphics card which needs 30w power supply and I change it to sapphire 7750 LP version which takes around 45w. I also change my ram from 8GB to 12GB. Now I am thinking can I change my i5-3450S to i7-3770K. Note about that the i5-3450s needs 65w to power it and i7-3770k needs 77w to power it. I wonder if I can change my CPU due to the fact that I already changed my gpu. Please answer can I have enough watts to power up the i7-3770k. Thx
a c 212 à CPUs
a b ) Power supply
February 10, 2013 1:43:14 PM

Geez, as it is you are cutting that power line VERY fine. I think you should upgrade your PSU before it goes and takes half your components with it.
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February 10, 2013 2:05:27 PM

i know but i cant upgrade my psu because is dell made
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a c 212 à CPUs
a b ) Power supply
February 10, 2013 2:30:25 PM

C4PTRI said:
i know but i cant upgrade my psu because is dell made


Does it have a proprietary connector to your mobo or something? If you can post a photo it would be helpful.
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February 10, 2013 2:34:50 PM

Check this post tomo I will post it tomo but right now i need to sleep it's a slim case you can search it in the Internet
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February 10, 2013 2:36:35 PM

I dun think it have a proprietary connector
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a c 212 à CPUs
a b ) Power supply
February 10, 2013 2:36:46 PM

Will do...
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February 10, 2013 2:41:22 PM

But I dun want to change my psu and no psu will fit my stupid case. It's only 12 more watts do you think it can handle it?
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a c 212 à CPUs
a b ) Power supply
February 10, 2013 2:52:03 PM

C4PTRI said:
But I dun want to change my psu and no psu will fit my stupid case. It's only 12 more watts do you think it can handle it?


It may handle it.. But even with the I5 as it is, you are streesing that PSU to the max. WHEN it fails violently it will damage your PC. Dell and any OEM PSUs are not reliable most of the time and barely provide the rated wattage.

You really need to upgrade it, or get a new case AND PSU to build the parts into.
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February 10, 2013 8:38:25 PM

Icic can you find a slim case psu out there? I can't find it and I can't change my case because someone will find out and it's to annoying getting everything out oh btw the i5 is in dell when I bought it :D 
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a c 212 à CPUs
a b ) Power supply
February 10, 2013 8:40:35 PM

C4PTRI said:
Icic can you find a slim case psu out there? I can't find it and I can't change my case because someone will find out and it's to annoying getting everything out oh btw the i5 is in dell when I bought it :D 


Yes but it was coupled with a very low end GPU that uses very little power. So it was safe wiht the 250W.
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February 10, 2013 9:59:51 PM

It's only 12w more if I put the i7 in but if the psu fatigues. I can't turn on my pc any more because its not enough to power it
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a c 135 à CPUs
a b ) Power supply
February 10, 2013 10:06:51 PM

budget for a new ps?

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a c 473 à CPUs
a b ) Power supply
February 10, 2013 10:07:22 PM

Time to move your PC innards to a new case which allows you to install a Full ATX size PSU. You should get a good brand of at least 500w if you have any intention for future upgrades such as a more powerful graphics card or a new motherboard that would allow you to overclock the i7-3770k. Good brands are Seasonic, XFX, Corsair, PC Power & Cooling, Enermax, and I suppose you can also toss in Antec.

Note: Switching the motherboard means that you will need to buy a Window OS. The OS that comes with the Dell will only install with that Dell motherboard. The same can be said if you bought a different brand like HP and Lenovo. The OS is tied to the motherboard.
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a c 135 à CPUs
a b ) Power supply
February 10, 2013 10:07:54 PM

still need to know his budget before we suggest anything further :)  but +1 jags

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February 10, 2013 10:15:16 PM

I wanto change my case but I can't and even I can it's too annoying to change it. But if I add 12 more watts for the psu to handle. It should work. But maybe after a year and a half the computer can't handle this core. So should I try it or someone can find a slim case oem psu.
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a c 135 à CPUs
a b ) Power supply
February 10, 2013 11:17:35 PM

your powersupply is too low. u need a new one.

and id get a new case.

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February 11, 2013 12:11:23 AM

I want to get a new one but someone won't let me
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a c 135 à CPUs
a b ) Power supply
February 11, 2013 12:18:30 AM

whos that

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February 11, 2013 1:05:03 AM

my dad and i srsly dont wanna lat him know i will buy a new cpu
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a c 135 à CPUs
a b ) Power supply
February 11, 2013 2:23:45 AM

still ur gonna have problems if theres too much power drawed and ur pc blowsup

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February 11, 2013 2:48:47 AM

Another option is to get a 3770s 65w cpu. You don't need the HD 4000 video in the 3770K with your video card, and the odds of you overclocking this computer are slim to none with the PSU at 250w. I have a 3770s and it's plenty fast. I run 3-8 virtual machines with VMware ESXi on it at a shot. Plenty of zoom to back up your video card.
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February 11, 2013 4:37:44 AM

Oh it's great then what's the difference between i7 3770T 3770S and 3770k?
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February 11, 2013 5:16:56 AM

If wont change my case I can assure you. But I can buy a new psu about 100-150 usd I dunno if the psu will fit in
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a c 135 à CPUs
a b ) Power supply
February 11, 2013 9:35:58 AM

well get a ps than. what website can u use?

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February 11, 2013 11:31:07 AM

I just wanna ps that fit my slim case
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February 11, 2013 12:19:12 PM

is i7 3770k and 3770s are the same except for the overclocking ability that 3770k has. If yes, i'm gonna go for the 3770s
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February 11, 2013 1:44:21 PM

C4PTRI said:
Oh it's great then what's the difference between i7 3770T 3770S and 3770k?



Speed is the main difference.

the 3770T is 45W 2.5 or 2.8ghz, I don't remember off hand
the 3770S is 65W 3.1ghz 8mb cache
The 3770 is 77W 3.4ghz 8mb cache
the 3770K is 77W 3.5ghz 8mb cache

the 3770S is hyperthreaded just like the 3770K

For gaming, all of these CPUs have more than enough power to get the job done.
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a c 212 à CPUs
a b ) Power supply
February 11, 2013 1:46:32 PM

You are all still missing the point that his PSU is very underpowered. Besides i don't see the point of getting an i7 with such a weak GPU. Unless he is not gaming with this system.
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February 11, 2013 1:47:12 PM

I will buy the 3770s becuz it's the same wattage with my broken CPU. Thx.
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a c 135 à CPUs
a b ) Power supply
February 11, 2013 4:22:27 PM

i told him he needs a new ps. ur gonna short circuit ur pc if u dont buy a new ps and try to run that cpu.
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February 11, 2013 8:33:32 PM

New ps then core. But no ps suits my pc
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a c 135 à CPUs
a b ) Power supply
February 11, 2013 9:01:39 PM

you new new ps and case. since u got a weird case thats not standard atx

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February 11, 2013 9:13:26 PM

Do it have slim case psu?
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a c 135 à CPUs
a b ) Power supply
February 11, 2013 9:49:14 PM

you need to change ur case and powersupply i cant explain it more clearly

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February 11, 2013 9:53:45 PM

Crap I cant change my case and psu. The only thing I can do is buy the same wattage CPU
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a c 135 à CPUs
a b ) Power supply
February 11, 2013 9:59:40 PM

ur gonna blowup ur pc if u dont replace the ps when u order a more powerful cpu.

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February 11, 2013 10:02:25 PM

The wattage is same as my CPU now 65w I'm gonna buy i7 3770s which is also 65w
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Best solution

a b à CPUs
February 11, 2013 10:15:52 PM

This is missing a bit of logic.

You can buy the i7 you want to, but just throttle the multiplier to match the 3770s. Then it will use the same power. The chip actually isn't different, nor does it save electricity. It's just the firmware that says it's max multiplier it can use..

The problem is if your dell mobo has this level of control where you can set it. If it doesn't have this, then yes perhaps getting the 3770s is the only way to throttle the chip down.

Either way, if 10watts is the difference, there's no way the tolerances on your parts are so fine that this will be the difference that kills you.
You are already at risk that your PSU will fail whether you saved 10watts or not.


I will offer that perhaps your computer won't violently fail, but fail slowly. You may get restarts or freezes. Then maybe one day your computer doesn't boot up and just beeps at you.
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February 11, 2013 10:19:31 PM

Oic I am a noob. Well if you say so do you recommend buying the i7 or the original one because my CPU broke down
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a b à CPUs
February 11, 2013 10:22:40 PM

buy whichever one's cheaper.
heck, perhaps even get another i5.

It depends what you are doing with your computer. Unless you are crunching numbers all day, or like the other guy running virtual machines, really having more CPU won't make too much of a difference for your single average user
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February 11, 2013 10:31:47 PM

I'm the guy that plays video games. Btw thanks for helping me out. I will go for the i7
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a c 135 à CPUs
a b ) Power supply
February 11, 2013 10:38:05 PM

you need a new case and powersupply!

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February 11, 2013 10:40:35 PM

I know but I can't buy a new case so I can't change my power supply
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a c 135 à CPUs
a b ) Power supply
February 11, 2013 10:44:35 PM

well ur already running on a bad ps. why cant u change case. u dont seemt o understand u need too if u want a better ps.

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February 11, 2013 10:47:24 PM

I told you already my dad won't let me. If I change my case how can I explain to him. He will say that the computer work fine bla bla bla
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a c 135 à CPUs
a b ) Power supply
February 11, 2013 10:47:55 PM

well than tought luck. i cannot help u further sorry

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February 11, 2013 10:52:34 PM

It's ok I will try the i7 first if my psu can't handle it... I will buy the i5
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a c 135 à CPUs
a b ) Power supply
February 11, 2013 11:07:30 PM

u know that doing that will fry ur pc possibly right.

but if your willing to take the risk i cant stop u.

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February 11, 2013 11:09:54 PM

Best answer selected by C4PTRI.
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