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AMD Opteron Valencia Interlagos Bulldozer

AMD's Next-Generation Opteron "Bulldozer" Chips to Feature Adjustable TDP.

AMD's Interlagos and Valencia to Sport TDP Power Cap Feature

[06/28/2011 10:37 PM]
by Anton Shilov

Advanced Micro Devices' next-generation Opteron microprocessors based on Bulldozer micro-architecture will support capability to adjust maximum thermal design power (TDP). The technology will allow customers to regulate TDPs in order to balance power consumption and performance of data centers.

Today's AMD Opteron processors allow turning off processor states in order to reduce power consumption, though that ultimately can lead to somewhat lower performance. Still, some large server users value power efficiency higher than pure performance. AMD promises that code-named Interlagos and Valencia will be able to reduce the TDP and maintain performance level of the chips.

"With today’s AMD Power Cap Manager, you can limit the processor P-states and cut power consumption although this limits the processor’s ability to get to the top frequency (which is also the most power-hungry spot on the curve as you can imagine).  By essentially “locking out” the top P-state, the processor never gets into that state, even under heavy utilization, helping cut down total power to the processor," explained John Fruehe, director of product marketing for server, embedded and FireStream products at AMD.

With the new TDP Power Cap for AMD Opteron  processors based on the upcoming “Bulldozer” core, customers will be able to set TDP power limits in 1W increments.  This means that instead of having to choose between different TDPs for processors, one can actually buy any power range and then modulate down.

Reducing per-processor TDP slightly means that it will be possible to install more processors into pre-specified power budget without compromising performance significantly. Moreover, if a workload does not exceed the new modulated power limit, one can still get top speed because since the top P-state is unlocked and allows to reach a power level.

Tags: AMD, Opteron, Valencia, Interlagos, Bulldozer

Discussion

Comments currently: 19
Discussion started: 06/29/11 09:45:44 AM
Latest comment: 07/04/11 06:17:57 PM
Expand all threads | Collapse all threads

[1-6]

1. 
very intresting but wouldn't make some chips useless like the same chip but higher clocked or would this chips be the cherry picked ones?
0 0 [Posted by: massau  | Date: 06/29/11 09:45:44 AM]
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2. 
Smell some innovations from AMD again
0 0 [Posted by: Pouria  | Date: 06/29/11 02:00:32 PM]
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- collapse thread

 
Yes, AMD simply has not enough money to pay for cold and warm processes to GloFo.
0 0 [Posted by: Azazel  | Date: 06/29/11 09:10:42 PM]
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3. 
If I am not mistaken you can already do something like that in software today. You can go to AMD Vision Engine control center, in cpu power tab and limit the maximum speed for your cpu. If I am right then nothing new here.
0 0 [Posted by: john_gre  | Date: 06/29/11 05:23:55 PM]
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- collapse thread

 
No, because powercap aims at the watt, no clock speed.
0 0 [Posted by: CarlosTex  | Date: 06/30/11 12:16:02 AM]
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This is different. With this, you set a thermal ceiling and the processor runs as fast as it can within that ceiling. Note that different workloads exercise the CPU differently, so the processor will reach different clock speeds for different loads.
0 0 [Posted by: faydr  | Date: 06/30/11 07:04:30 PM]
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4. 
The Intel Core i7/i5 CPUs have had adjustable Turbo TDP settings for two and a half years as well as adjustable multipliers to reduce maximum power consumption. It's a powerful feature so it's nice to see AMD finally implement this. The newer Core i7/i5 Sandy Bridge CPUs also have this feature available as long as computer manufacturers don't lock this capability in the bios. Check out ThrottleStop if you want to play with these features in the Intel CPUs.

http://www.techinferno.com/downloads/?did=1
0 0 [Posted by: unclewebb  | Date: 06/30/11 10:34:31 AM]
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- collapse thread

 
AMD has had adjustable multiplies since the first athlon64/opteron. WAAAAY before intel.
this one is automatic and dynamic thou, it changes the multiplier depending on load and TDP.

and this feature goes much farther then a adjustable turbo TDP, its a adjustable overall TDP, for the whole CPU.
1 1 [Posted by: Countess  | Date: 06/30/11 04:38:29 PM]
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5. 
You can already control the P-States "clock speed" of modern processors through software. One software example is Right Mark CPU Clock Utility. With this software i can control my C2D E6300 actual clock speed "P-State" & voltage at different clock speeds & limit the cpu at that slower speed, also i can also throttle my clock rate to the maximum "100%" of the P-state or all way down to "12.5%" of the current P-State. Limiting my CPU performance, by doing that i was lowering my TDP watt.

The P-State is pretty much Voltage, & CPU multiplier "speed" adjustments.

With my S939 Sempron 3000+ proc i can lower & limit the cpu speed "P-State" to the speed of the Hyper-transport link speed which is 800 MHz with the same software.

All amd is probably doing is converting tdp "watt" to clock speed & voltage, and shoving it into the bois, if that.

My assumption is voltage adjustments at different clock multipliers & setting the clock speed to the speed that you feel is the most efficient in the bois.

To me at least, Overall its not a new thing. It just shoving similar software like RM Clock & ThrottleStop into the bios & calling it Power Cap Manager, what a joke.

Whoopee do nothing new.
3 5 [Posted by: macintoshci  | Date: 06/30/11 11:29:40 AM]
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- collapse thread

 
Dude, different workloads will work the processor at different rates, so its not possible to simply convert a watt to a particular speed and voltage, as it will change depending on what the processor is actually doing. This is even more true with the aggressive power gating that AMD and intel use now.

Yes, with Throttlestop you can reduce the P-state, but what you can't do is set it to say 43W, and then have the processor dynamically adjust its frequency and voltage to keep the TDP at 43W whilst the processor load changes.

Current processors can sense load and drop into a lower p-state, but only at predetermined steps, and it can't regulate it to a particular TDP, just a percentage of processor load, which aren't directly related (ie you can max out a processor by doing a simple loop that uses very little of the actual transistors in the processors, or you can load it to only 50% but with complicated instructions like SSE instructions that use huge amounts of transistors).

So this is quite an innovation, and its OS independent which is a bonus.
4 4 [Posted by: genie  | Date: 07/01/11 03:37:43 AM]
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Ok i just did some calculations on for my cpu TDP
using this website "CPU Overclock Calculator" http://www.extreme.outervision.com/tools.jsp#cpuoc To Calculate my OC e6300 cpu TDP, messing with the temps does nothing to the TDP, it just changes the °C/W Rating. Messing with the clock changes the TDP, messing around withe voltage changes it, Messing around with both of them changes the TDP.

Now i think i may need someone with the actual know how to verify my claims, and or add missing info that i'm missing.

I still think AMD is reversing the equation. For example my e6300. E6300 TDP=65W at 1860 Clock and at a voltage of 1.2250 . I over clock my CPU to the speed of 2170 leaving the voltage the same "1.2250" it raise my TDP to 76W.

So if i want to control my TDP all i have to do is clock throttle it, underclock, and or change the P-State my of my e6300. Using one or all of the methods.

Say i want a TDP of lets say 50. The method i will be using is changing the P-State of my e6300 CPU. P-state = Cpu speed & Cpu Voltage. Cpu speed = 1600, 1600=6*266.67. CPU Voltage = 1.1625, and wala & i got the a lower TDP of 50W.

genie I think your comment is... too hard to understand. You made your explanation harder to understand than the article itself.

Which leads me back to...

It just shoving similar software like RM Clock & or ThrottleStop into the bios & calling it Power Cap Manager, what a joke.

Whoopee do its nothing new.
3 5 [Posted by: macintoshci  | Date: 07/01/11 01:03:24 PM]
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Wow, I see you enjoy showing the world how little you know about processors. I'm happy for you. I'd try to explain again, but I get the impression you are too arrogant and stupid (a dangerous combination) to understand.
2 4 [Posted by: genie  | Date: 07/01/11 05:00:08 PM]
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At least i didn't make my explanation harder to understand than the the article. I'm right with the power cap manager. I'm not right with the TDP Power Cap Manger. I had to read another article that was actually mostly focusing on the new tech instead of the old tech.

But i'm with right my examples i can lower my TDP's of my CPU depending on what the software can do, but slowing the performance down.

"What amd is doing, is just using power gating to their advantage, & shoving a watt meter or meters and a power management system inside of the cpu, & having an adjustable limit of the wattage used. It doesn't care about workloads, if the cpu is within the user's specified limit. It won't limit the performance of the cpu as long as it keeps within that set power limit. Once it starts maxing out the cpu & it goes over. It will slow the cpu down, to keep within the set power limit. Thus i'm going assume when it does slow it down it will adjust the clock rate & voltage accordingly to meet the set TDP."

Therefore keeping server farms within their power budget, while still maintaining a high performance, depending on work loads.

My one paragraph in parenthesis explains the concept just as well or better than yours in less mumbo jumbo. I just hope you have a high enough IQ to understand mine....

To make it simpler for you. AMD is taking advantage of power gating, & just adding another turbo core system in their cpu, making the TDP adjustable, because turbo core & turbo boost tech already monitors the TDP of the cpu.

Which brings me back to this.

Whoopee do its nothing new.
3 5 [Posted by: macintoshci  | Date: 07/02/11 12:29:17 PM]
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Well yes I do have enough IQ to understand you, because you are now parroting back to me what I said in my first post, only without the explanation why clockspeed and voltage are not the sole determinants of TDP, which you didn't seem to understand from your first post and which you now agree you were wrong about.
2 4 [Posted by: genie  | Date: 07/03/11 02:08:45 PM]
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I don't know what to say. You were indefinitely wrong in what you said about me. Which is a stereotyping. i was wrong in saying your statement was bullsh*t, when you explanation of how it works is similar and or right with my latest statement about amd tdp power cap.

yes i was parroting back to you what you said in your first post, but in a shorter easier explanation, 100% perfect or not.

Here's a couple of articles that i found after reading this xbitlab article. The first one was the one that got me straighten out on the whole TDP Power cap thing.

1.http://blogs.amd.com/work/2011/06/28/tdp/

2.http://www.linuxfordevice...ap-for-forthcoming-chips/

I'm sorry genie.
3 4 [Posted by: macintoshci  | Date: 07/03/11 04:26:17 PM]
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6. 
Damn intel trolls
3 3 [Posted by: alpha0ne  | Date: 07/04/11 12:13:21 AM]
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- collapse thread

 
Awwwww, look.... Another AMD butt pirate.
3 4 [Posted by: macintoshfx  | Date: 07/04/11 06:07:33 PM]
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Damm AMD Gnomes!!!
3 4 [Posted by: macintoshci  | Date: 07/04/11 06:13:30 PM]
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"Another crap from poorAMDfags. :D"
7 0 [Posted by: quad840  | Date: 07/04/11 06:17:57 PM]
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