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So what TDP would a 22nm 2500k-like IB have?
- Thread starter Barfo
- Start date
Termie
Diamond Member
Nope: http://www.anandtech.com/show/4083/...-core-i7-2600k-i5-2500k-core-i3-2100-tested/2
That being said, the 2500k is quite efficient for a quad: http://www.anandtech.com/show/4083/...core-i7-2600k-i5-2500k-core-i3-2100-tested/21
RussianSensation
Elite Member
That PSU will support 2500k @ 4.5ghz + 2x HD6850s. Not sure why you are worried about upgrading the PSU for a 95W CPU.
Your Earth Watts could support a very power setup today. I have a system with a 2600K overclocked to 4.8GHz/1.36v, 2x4GB DDR3-1600, P8P67 Deluxe, 3 5400 RPM drives and 1 SSD, and a GTX 470 video card. Measured from the wall, system power consumption with a heavily threaded CPU intensive application is about 250-260W.
Typical power usage while playing Dragon Age 2 is about 350W with the GTX 470 overclocked to 800Mhz at 1.065v.
lehtv
Elite Member
There are low-power versions of 2500 and 2600 (I think the ones with the S suffix) that use 65W. Don't think they're available as retail though
But yeah it looks like power requirements for components are going down a bit with the next generation, thanks to 22nm CPUs and 28nm GPUs.
But yeah it looks like power requirements for components are going down a bit with the next generation, thanks to 22nm CPUs and 28nm GPUs.
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Barfo
Lifer
Good to know. I'm kind of paranoid about coming up short regarding the PSU, I'm afraid of my stuff getting fried.
Edrick
Golden Member
If you do not use the GPU, which most of us do not, then it becomes an 80W part (not 95W)
lehtv
Elite Member
I still wouldn't run 6850 crossfire on that PSU though. Running the PSU close to its rated wattage isn't the best idea, not because you'll fry something, but because power quality and efficiency become worse when you get to high % load. How much worse really depends on the PSU quality, and EarthWatts isn't exactly Antec's High End. Also, 600W minimum PSU is recommended for crossfire by AMD
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given the market the 2500K aims are, I would think any TDP would be 5-10W total (if any) with the rest going towards running the replacement part faster.
of course, it would be cheaper for intel (ie: keep the same cooler / no redesign) to keep the 95W TDP and given the advantanges of 22nm/3D transisters to more performance.
lower end parts will take a lower TDP over speed increase I suspect, while the 2600k replacement will be pure performance. (no inital TDP change).
of course, that would be "spreading" the advantanges, I suspect marketing will have a say and it might just be TDP changes across the board so intel can say "look at us being green".
it will depend on the market and what intel wants to get across. Given the economy, I would nearly bet it would be lower TDP (so running costs in the long run) with a few select extream users getting faster performance ones (ie:everything is given a lower TDP except the "K" units, which has a price rise to go with the performance increase).
of course, it would be cheaper for intel (ie: keep the same cooler / no redesign) to keep the 95W TDP and given the advantanges of 22nm/3D transisters to more performance.
lower end parts will take a lower TDP over speed increase I suspect, while the 2600k replacement will be pure performance. (no inital TDP change).
of course, that would be "spreading" the advantanges, I suspect marketing will have a say and it might just be TDP changes across the board so intel can say "look at us being green".
it will depend on the market and what intel wants to get across. Given the economy, I would nearly bet it would be lower TDP (so running costs in the long run) with a few select extream users getting faster performance ones (ie:everything is given a lower TDP except the "K" units, which has a price rise to go with the performance increase).
Suspicious-Teach8788
Lifer
6850s are single plugs? I run dual 5830s mining full blast and it hits 400W only. 6850s are fine. The only issue I have is with overclocking the CPU as that will severely increase your power usage.
lehtv
Elite Member
Not being able to OC as well is just one of the reasons. At load levels near that 80% mark the PSU will have lower power quality and efficiency compared to the 60-70% you'd reach with a 600W rated PSU. This affects heat generation and PSU longevity.
I assume you hit 400W when gaming? That means your system can potentially use a lot more than that. When gaming, your CPU usually isn't working to full capacity. Even though a high quality PSU will get away with lower than recommended wattage for crossfire, I would still want to keep a safe margin between the absolute max power consumption of the system, and the rated wattage. E.g. 400W absolute max, 350W or less when gaming, in the case of a 500W rated PSU.
I assume you hit 400W when gaming? That means your system can potentially use a lot more than that. When gaming, your CPU usually isn't working to full capacity. Even though a high quality PSU will get away with lower than recommended wattage for crossfire, I would still want to keep a safe margin between the absolute max power consumption of the system, and the rated wattage. E.g. 400W absolute max, 350W or less when gaming, in the case of a 500W rated PSU.
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RussianSensation
Elite Member
That's your own personal opinion and it's way too conservative (i.e., has nothing to do with reality of what a PSU can actually do). I ran Core i7 860 @ 3.9ghz and GTX470 @ 700mhz GPU overclock both loaded to 99% (CPU in Seti@Home and GPU in MilkyWay@home) for 12 months straight on a 520W PSU. Before that, HD4890 was running on that system. OP has an E8400 @ 3.0ghz and a mere HD6850. His system is consuming about 200W less than mine was. Good quality PSUs are rated at 100% wattage (i.e., you are supposed to be able to run them at maximum capacity).
The idea of running a 500W PSU at 400W loaded max continues from the past since so many people purchased crappy Raidmax and Apevia PSUs, etc. that blew up on them. Any of the top brands such as Antec, Corsair, PC Power & cooling, Seasonic, etc. can take a beating in a 40-50*C environment at full load, nevermind in a well ventilated case at 25*C case temperature.
Also, efficiency is barely affected. You are looking at 2-3% variation between little load and maximum load. In fact, the latest trend with the best PSUs is that they are rated to run 100-150W beyond rated load. So rated load has now become the bare minimum for a lot of the good PSUs. The top manufacturers now leave tons of room beyond spec.
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Wouldn't that mean that Intel releases a successor to the i5-2500K that is barely any faster? And is that really going to happen?
Faster in terms of clockspeed or performance?
Remember, IB tick is a tick+, not merely a tick.
http://www.anandtech.com/show/4378/ivy-bridge-a-tick-with-configurable-tdp
Edrick
Golden Member
So does that make SB-E a tock-, considering the minimal gain over Westmere? 🙂
I do not see why they have to use the term "tick+". Didn't westmere include new instructions, which is very rare for a "tick"? Why wouldn't that be a "tick+" too?
Most of the IB improvements will be in the GPU (taken the 22nm shrink as a given). So the different between IB-E and SB-E will be minimal at best (other than the die shrink).
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Well, both. If Intel chooses to focus on lowering the TDP of their performance desktop processors at the next node transition, then that limits their clock frequency headroom and thereby performance. In the notebook space that's a natural step, but I'm not sure that Intel will sacrifice performance gains for a decrease in TDP from 95W in their desktop CPUs.Faster in terms of clockspeed or performance?
Remember, IB tick is a tick+, not merely a tick.
http://www.anandtech.com/show/4378/ivy-bridge-a-tick-with-configurable-tdp
AtenRa
Lifer
Lets assume IB has the same micro architecture as SB,
They can keep the same TDP as 2500K and raise the clocks (raise performance) or
They can lower the TDP and keep the same clocks (same performance lower power usage)
According to Intel, 22nm transistors have 18% higher performance (lower Gate Delay) at 1V than 32nm or
They can have almost 50% lower power usage at the same performance(Gate Delay).
If you want to have the same performance as 2500K at 22nm then your power usage can go down almost 50%, that will be close to 45-50W.
http://www.anandtech.com/show/4313/...nm-3d-trigate-transistors-shipping-in-2h-2011
They can keep the same TDP as 2500K and raise the clocks (raise performance) or
They can lower the TDP and keep the same clocks (same performance lower power usage)
According to Intel, 22nm transistors have 18% higher performance (lower Gate Delay) at 1V than 32nm or
They can have almost 50% lower power usage at the same performance(Gate Delay).
If you want to have the same performance as 2500K at 22nm then your power usage can go down almost 50%, that will be close to 45-50W.
http://www.anandtech.com/show/4313/...nm-3d-trigate-transistors-shipping-in-2h-2011
AtenRa
Lifer
SB and SB-E is a TOCK and not a TICK,
Tock is a new arch, Tick is a new process
So, SB-E is a TOCK and IB is a Tick + because it is not only a shrink (if you ask me its just a shrink 😉)
Edit: Sorry my mistake, thought you were saying that SB-E is a Tick,
I would like to say here that IB-E will have a process advantage, that will give it less power usage or more performance or more cores than SB-E 😉
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Edrick
Golden Member
Yea, minus the GPU enhancements, it is a TICK.....same as every other TICK. I do not understand where the "+" come into play. I my opinion, the Westmere TICK was much greater than the IB TICK will be.
Vesku
Diamond Member
I recently had a PC Power and Cooling 750W fail on a dual 5830 system that should have been pulling about 400-450W. But I will give it credit for not taking anything with it when it popped. I replaced it with an Antec 900W for peace of mind and future upgrades. That Antec 500W does provide the 2 PCI-E connectors so Antec seems to think it could handle a couple of 6850s, plus if it doesn't it has a very good chance of failing gracefully. ;p
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