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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
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[1-5]

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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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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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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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. 
Damn intel trolls
3 3 [Posted by: alpha0ne  | Date: 07/04/11 12:13:21 AM]
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Awwwww, look.... Another AMD butt pirate.
3 4 [Posted by: macintoshfx  | Date: 07/04/11 06:07:33 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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