Core i7 3770T

[Insert_Nickname]

I was wandering if anyone has any good/bad experience with overclocking this processor...?

The reason I am interested in the T model is that it is the only 45W Intel processor with hypertheading. Why is that important you will properly be asking yourselves, it is because of the insane cost of electricity here in Denmark (for the Americans out there, the cost is about 40-50c per Kwh). As you can guess this makes running my current i7 920 pretty d*** expensive...

 

[Ferzerp]

You can, at best, add 3-5% to BCLK and OC that way (by 3-5%). It's not a K, so you can't touch the multiplier.

 

[Insert_Nickname]

I was under the impression that anything supporting turboboost could be overclocked up to 4 bins from stock . But thanks anyway it will do nicely at stock speed...

 

[Ferzerp]

That's just changing the parameters of turbo boost though (which is 4 clock bins)? Not really messing with above stock.

 

[JAG87]

Remember that the 45W TDP only applies to 2.5Ghz with all cores loaded.

 

[Insert_Nickname]

Oh, well you learn something every day . Overclocking would just be the final icing on the cake... but the 4 bins would still take it to 4,1Ghz on one core and 2,9Ghz on all four, assuming there is thermal headroom, correct?

It has to be said that I have no need for the integrated graphics core... I have a perfectly serviceable HD7870 to handle that.

 

[Ferzerp]

Check what I said because I very well may be wrong.

 

[ShintaiDK]

I was wandering if anyone has any good/bad experience with overclocking this processor...?

The reason I am interested in the T model is that it is the only 45W Intel processor with hypertheading. Why is that important you will properly be asking yourselves, it is because of the insane cost of electricity here in Denmark (for the Americans out there, the cost is about 40-50c per Kwh). As you can guess this makes running my current i7 920 pretty d*** expensive...

OCing changes the TDP and the CPU consumes more power.

Also Ivy aint expensive to run. Its all about idles modes mainly.

Your i7 920 got a large board that also uses power. But if you want to save power, look at your GFX card. It sits on 2/3 to 3/4 of the power budget.

3770T only makes sense if you use it for a chassis etc that need the low TDP. Else just downclock another one. And why do you need hyperthreading, but cant afford the electricity? 100$ electricity in terms fo 3770T vs 3570K means if you run both at 100% load 24/7 (They use the same at idle.) and we asume for the math they both peak their TDP. Then it will take 9000-10000 hours before the 3770T gets cheaper. But the 3570K will have done alot more work in the same timeframe. Hence why the 3770T looks worse and worse.

 

[Insert_Nickname]

Your i7 920 got a large board that also uses power. But if you want to save power, look at your GFX card. It sits on 2/3 to 3/4 of the power budget.

Uhm, no. That GFX board (HD7870) card actually consumes LESS power then my previous HD5770 at idle. Slightly more at load though...

I admit that this can be a little perplexing to someone that comes from another country. My current setup (early 2009 i7 920D0 in Asus P6T SE mainboard + various drives etc.) consumes ca. 120-130W idle. That costs me around 2700-3000DKK (approx. US$485-525) assuming 24/7 operation. And that is BEFORE factoring load figures in. In 3-4 years that works out at US$1500-2000...

 

[ShintaiDK]

Uhm, no. That GFX board (HD7870) card actually consumes LESS power then my previous HD5770 at idle. Slightly more at load though...

I admit that this can be a little perplexing to someone that comes from another country. My current setup (early 2009 i7 920D0 in Asus P6T SE mainboard + various drives etc.) consumes ca. 120-130W idle. That costs me around 2700-3000DKK (approx. US$485-525) assuming 24/7 operation. And that is BEFORE factoring load figures in. In 3-4 years that works out at US$1500-2000...

I live in the same country

And there is no way a 3770T gonna save you any money.

Also 120-130W idle is ALOT. My system doesnt even get near that with a 100% used CPU. Did you turn EIST off or something? Or perhaps your GFX card doesnt idle as good as you think.

Remember every HD also adds around 10W. And you didnt exactly pick a power efficient board either. Then add the efficiency of your PSU. It can also make a huge difference.

 

[Insert_Nickname]

I live in the same country

Whups, havde ikke set du er dansker, undskyld...

Nope, I have every single power saving feature enabled (EIST, C1E etc.), but running an SSD, raid10 array with controller board, a USB3 controller and a wireless LAN card (special purpose) gets you to 120W pretty quick...

The power supply is a Coolermaster Silent Pro M600 (600W - 2009) with a claimed efficiency rating of 87%, power supplies have become more efficient in the years since but why throw away something that works rock stable...

Anyway I am always open to suggestions...:hmm:

 

[d4a2n0k]

Nehalem doesnt down volt at idle so they burn a lot more than the Sandys and Ivys do. The 3770T will not save you any money over a 3770k. They will both idle down to the same voltage but the 3770T only goes up to 2.5ghz so thats why its a 45w CPU. If you underclock a 3770k, it will do the same.

 

[beginner99]

it is because of the insane cost of electricity here in Denmark (for the Americans out there, the cost is about 40-50c per Kwh).

OFF TOPIC:

Well, you should then next time vote for the politicians that are pro nuclear instead for such believing in the myth of cheap wind and solar energy.

I pay less than half of that price (and half of that is for power grid maintenance and not the electricity per se) and I live in europe too and this is done with 0 CO2 emission. Sadly due to idiot politicians and voters this will soon change...

 

[Insert_Nickname]

OFF TOPIC:

Well, you should then next time vote for the politicians that are pro nuclear instead for such believing in the myth of cheap wind and solar energy.

I pay less than half of that price (and half of that is for power grid maintenance and not the electricity per se) and I live in europe too and this is done with 0 CO2 emission. Sadly due to idiot politicians and voters this will soon change...

About 1/3 of the cost is the electricity itself. But what is driving prices up, is taxes, taxes and taxes, THEN you add VAT of the TAXES themselves, just to liven things up...

 

[ShintaiDK]

OFF TOPIC:

Well, you should then next time vote for the politicians that are pro nuclear instead for such believing in the myth of cheap wind and solar energy.

I pay less than half of that price (and half of that is for power grid maintenance and not the electricity per se) and I live in europe too and this is done with 0 CO2 emission. Sadly due to idiot politicians and voters this will soon change...

The actual production cost is very low. Even tho coalprice have trippled the last 5-7 years. So even if we changed to pure wind, solar etc. We would get maybe 5% increase in price.

Distribution, subscription etc is some of the heavy burdens besides taxes.

Nuclear is also very expensive. I´m not sure how you got the idea that it should be cheap. All nuclear plants are heavily state subsidized. In the US it cost between 10 and 20billion$ to build one for example.

When the UK began privatizing utilities, its nuclear reactors "were so unprofitable they could not be sold." Eventually in 1996, the government gave them away. But the company that took them over, British Energy, had to be bailed out in 2004 to the extent of 3.4 billion pounds.

Nuclear plants are mainly to show of...national capabilities.

 

[ShintaiDK]

About 1/3 of the cost is the electricity itself. But what is driving prices up, is taxes, taxes and taxes, THEN you add VAT of the TAXES themselves, just to liven things up...

Thats not true. ~50% is production and distribution.

 

[Magic Carpet]

I was wandering if anyone has any good/bad experience with overclocking this processor...?

The reason I am interested in the T model is that it is the only 45W Intel processor with hypertheading. Why is that important you will properly be asking yourselves, it is because of the insane cost of electricity here in Denmark (for the Americans out there, the cost is about 40-50c per Kwh). As you can guess this makes running my current i7 920 pretty d*** expensive...

Get a Celeron G530/540, it's fast.. low power and doesn't cost the Earth. Perfect for day-to-day tasks, imo.

Or, get a used AMD Athlon "e" series (45w) and unvervolt it (65W chips don't undervolt as good). Perfect for 24/7 operation. Or, just get a laptop!

T series meant for smaller cases with limited cooling as well as bios options. Price premium isn't worth it, imo.

 

[Puppies04]

Nuclear is also very expensive. I´m not sure how you got the idea that it should be cheap. All nuclear plants are heavily state subsidized. In the US it cost between 10 and 20billion$ to build one for example.

Last time i checked you don't have to ship 100 tonnes of coal into a nuclear plant every day though.

 

[beginner99]

The actual production cost is very low. Even tho coalprice have trippled the last 5-7 years. So even if we changed to pure wind, solar etc. We would get maybe 5% increase in price.

Distribution, subscription etc is some of the heavy burdens besides taxes.

Nuclear is also very expensive. I´m not sure how you got the idea that it should be cheap. All nuclear plants are heavily state subsidized. In the US it cost between 10 and 20billion$ to build one for example.

Nuclear plants are mainly to show of...national capabilities.

They are not state subsidized were I live and they are owned by a company not the state. Anyway if you don't consider future cost (eg. storing the waste, building back the plant,...) and sell the power too cheaply then of course I would not want to buy such a plant either. However if that cost is reflected in the price per kWh and that additional amount is put in a separate account meant exactly for future cost, there is no issue and nuclear plants are highly profitable.
hell, here power companies financed hydro plants with the winnings from nuclear.

 

[JAG87]

The most power efficient cpu you can get is the 3770K if you need HT, or the 3570K if you don't need HT. You overclock them as far as they can go without raising the stock voltage and that's it. At idle (1.6Ghz and low voltage), it's as efficient as any other SB/IB processor including the T variant, but at load it's much faster than anything else, so it will finish the task sooner, and the longer you stay idle, the less you're going to pay.

Count roughly +10W for every 300 Mhz. A stock 3770K runs at 3.7Ghz fully loaded (77W), so you've got:

87W at 4.0
97W at 4.3
107W at 4.6 (but you'll never make it at stock voltage)

If you start raising the voltage, then you need to add +10W for every 0.05V, so you don't want to do that. Just overclock as far as it goes with no offset from stock voltage.

Hope this was helpful.

 

[Insert_Nickname]

Get a Celeron G530/540, it's fast.. low power and doesn't cost the Earth. Perfect for day-to-day tasks, imo.

Or, get a used AMD Athlon "e" series (45w) and unvervolt it (65W chips don't undervolt as good). Perfect for 24/7 operation. Or, just get a laptop!

T series meant for smaller cases with limited cooling as well as bios options. Price premium isn't worth it, imo.

Well, first of all a laptop really isn't an option due to the requirement of 24/7 operation. Second the T is actually slightly cheaper as of this writing, and i need something with a little more performance... but otherwise good point I had thought about that before starting the thread...

@ShintaiDK

My figures my have been a little off but not by that much. Have you checked your power bill recently?. I found some statistics. They are from Q4 2011 but they should illustrate nicely.

total cost per kwh is 2,21DKK (40c) and have risen since (currently 2,58DKK (45c))

98øre (0,98DKK) - this is the pure cost for the electricity including distribution and utility expenses excl. VAT

The rest is various "afgifter" (I don't think there is an English word that can translate the term correctly for the English speakers out there...) and VAT (moms). Electricity (and energy generally) certainly isn't getting cheaper with our current government and their 2050 energy plan...

http://energitilsynet.dk/el/priser/prisstatistik/

But this really isn't the forum for discussing Danish politics...

 

[Insert_Nickname]

The most power efficient cpu you can get is the 3770K if you need HT, or the 3570K if you don't need HT. You overclock them as far as they can go without raising the stock voltage and that's it. At idle (1.6Ghz and low voltage), it's as efficient as any other SB/IB processor including the T variant, but at load it's much faster than anything else, so it will finish the task sooner, and the longer you stay idle, the less you're going to pay.

Count roughly +10W for every 300 Mhz. A stock 3770K runs at 3.7Ghz fully loaded (77W), so you've got:

87W at 4.0
97W at 4.3
107W at 4.6 (but you'll never make it at stock voltage)

If you start raising the voltage, then you need to add +10W for every 0.05V, so you don't want to do that. Just overclock as far as it goes with no offset from stock voltage.

Hope this was helpful.

Point taken, I had not thought about it in that way... :hmm:

 

[ShintaiDK]

@ShintaiDK

My figures my have been a little off but not by that much. Have you checked your power bill recently?. I found some statistics. They are from Q4 2011 but they should illustrate nicely.

total cost per kwh is 2,21DKK (40c) and have risen since (currently 2,58DKK (45c))

98øre (0,98DKK) - this is the pure cost for the electricity including distribution and utility expenses excl. VAT

The rest is various "afgifter" (I don't think there is an English word that can translate the term correctly for the English speakers out there...) and VAT (moms). Electricity (and energy generally) certainly isn't getting cheaper with our current government and their 2050 energy plan...

http://energitilsynet.dk/el/priser/prisstatistik/

But this really isn't the forum for discussing Danish politics...

Yes I have, got Dong Energy.

And you should be happy about the energyplan. Coal prices continue upwards. Its already cheaper to use wind than coal. Only reason the picture gets distorted is due to the fact, that they dont incorporate the coalplants build between the 50s and 90s they all got for free, payed by the government.

With coal you might end up paying a combined 4-5kr/kw/h in 5-10 years.

But again, forget the 3770T. Its a product designed for a completely different thing than what you tend to use it for.

Btw, my system idles at around 50W measured from the AC and 105W with 100% loaded cores. Think about that....

 

[Insert_Nickname]

Yes I have, got Dong Energy.

And you should be happy about the energyplan. Coal prices continue upwards. Its already cheaper to use wind than coal. Only reason the picture gets distorted is due to the fact, that they dont incorporate the coalplants build between the 50s and 90s they all got for free, payed by the government.

With coal you might end up paying a combined 4-5kr/kw/h in 5-10 years.

But again, forget the 3770T. Its a product designed for a completely different thing than what you tend to use it for.

Btw, my system idles at around 50W measured from the AC and 105W with 100% loaded cores. Think about that....

Oh, I have SEAS-NVE, but I live in Sydsjælland and we do not get much choice down here... anyway I DO support the 2050 plan in principle, it's just the implementation that I don't like that much... :whiste:

Anyway I think I have a solution, IF it works as advertized.

http://www.asus.com/Motherboards/Intel_Socket_1155/P8Z77V_DELUXE/

It should be able to get the K down to 35W, so I get the best of BOTH worlds...

 

[ShintaiDK]

Anyway I think I have a solution, IF it works as advertized.

http://www.asus.com/Motherboards/Intel_Socket_1155/P8Z77V_DELUXE/

It should be able to get the K down to 35W, so I get the best of BOTH worlds...

The only way to get the CPU to 35W load is to downclock it. And for that you can use a simpler board. The more simple board the less it uses. I already seen Asus boards using 20-30W more than a simple motherboard. Also the more phases the bigger powerwaste as well. Not to mention all the useless crap added.

If low powerconsumption is what you focus on. Then its not going very well