Featured Articles

Intel takes credit for three-way 4K gaming

Intel takes credit for three-way 4K gaming

All of a sudden Intel is talking about desktop gaming like there is no tomorrow and it is pushing it. The…

More...
Nvidia Shield Tablet 32GB 4G LTE out for pre orders

Nvidia Shield Tablet 32GB 4G LTE out for pre orders

Nvidia has finally revealed the shipping date of its Shield Tablet 32GB in 4G LTE flavour and in case you pre-order…

More...
Apple announces its Apple Watch

Apple announces its Apple Watch

Apple has finally unveiled its eagerly awaited smartwatch and surprisingly it has dropped the "i" from the brand, calling it simply…

More...
Skylake 14nm announced

Skylake 14nm announced

Kirk B. Skaugen, Senior Vice President General Manager, PC Client Group has showcased Skylake, Intel’s second generation 14nm architecture.

More...
Aerocool Dead Silence reviewed

Aerocool Dead Silence reviewed

Aerocool is well known for its gamer cases with aggressive styling. However, the Dead Silence chassis offers consumers a new choice,…

More...
Frontpage Slideshow | Copyright © 2006-2010 orks, a business unit of Nuevvo Webware Ltd.
Tuesday, 02 April 2013 13:04

AMD APUs might have issues

Written by Slobodan Simic

 amd aseries logo

Updated: Not an issue but a good design decision

While testing AMD's A10-5800K APU, Xbitlabs.com discovered a rahter interesting thing that might be a real problem for AMD APUs as, at least some of them, might have a problem related to the TDP and downclocking.

According to Xbitlabs.com, their AMD A10-5800K sample was behaving rather strangely and in some screnarios dropped way below its 3.8GHz base clock. As you already know the A10-5800K has a base clock of 3.8GHz while it can turbo up to 4.2GHz.

While putting the APU under high multithreaded load, the clock speed ended up at 3.4GHz, which is way below the base 3.8GHz clock. The reason apparently lies in TDP as when it exceeds its default level, the APU drops its base clock. Xbitlabs.com noticed the problem in Linpack benchmark as well as in various video encoding apps and 3D renderers showing that the APU delivered lower performance than expected. Strangely enough, the drop does not happen when APU is forced to work without AMD Turbo Core, but the APU is then locked at 3.8GHz.

According to Xbitlabs.com, AMD is quite aware of the problem but notes that it occurs in very rare cases under loads that are not typical for client microprocessors, so an average user will not notice it.

It is not a big of a deal as benchmarking will definitely put much more strain on the APU or CPU than any average user will ever do and as soon as TDP drop below the treshold it should go up to at least its base clock.

You can check out more here.

Update:

We have been contacted by AMD's Public Relations Manager, Peter Amos, stating that the graceful clock throttling via the Turbo Core Technology when TDP is exceded by benchmarks in an unrealistic scenario is indeed a good design decision rather than issue. The original Xbitlabs.com has also been updated accordingly.

 

Last modified on Thursday, 04 April 2013 12:57
blog comments powered by Disqus

 

Facebook activity

Latest Commented Articles

Recent Comments