|08-07-2011, 12:50 AM||#1|
Join Date: May 19 2008
[Techpowerup.com] A8-3850 Has Ineffective BClk Multiplier
"Empty Overclocking" is a term we just made up, to describe unreal overclocking headroom that does not translate into any performance improvements, with AMD's A8-3850 APU. This chip has an upwards unlocked base clock (BClk) multipler. Setting it above the factory default will increase clock speed (at least the clock speed that's reported to you), but that "increased" clock speed will not translate to any performance improvements at all.
This means that the multiplier is ineffective in driving the clock above its maximum default value. So the next time you see screenshots screaming something like "6.00 GHz" on air with the base clock at its default 100 MHz, don't be fooled, trust only those overclocking feats in which the multiplier is set at the maximum default (29.0x) or lesser, and in which the overclocker has increased the base clock among other things.
Update: It seems like AMD is aware of the issue, and forewarned reviewers about it. Apparently a glitch in the BIOS code allows the users to "set" higher multiplier values than the chip can respond to, even as the chip doesn't run at those values. Utilities like CPU-Z read those BIOS-set values and display the effective clock speed, even as the actual clock speed doesn't budge. AMD recommends only the base clock increase method for overclocking. As always, AMD warned that overclocked chips are not covered by product warranties. Perhaps future BIOS updates by motherboard vendors will fix this bug.
Source: OCWorkbench, Image Courtesy Newegg.com
|bclk, ineffective, multiplier, techpowerupcom|
|Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)|
|Similar Threads for: [Techpowerup.com] A8-3850 Has Ineffective BClk Multiplier|
|Thread||Thread Starter||Forum||Replies||Last Post|
|[Techpowerup.com] (PR) HighPoint Launches Industry's 1st PCI-E 2.0 x16 SATA Port Multiplier HBA Series||News||Reviews & News Online||0||15-12-2010 06:10 PM|
|[Techpowerup.com] Core i5 to Feature Lower QPI Multiplier||News||Reviews & News Online||0||27-04-2009 08:40 AM|
|[Techpowerup.com] Intel Decides to Unlock the Memory Multiplier of its Core i7-920 an||News||Reviews & News Online||2||22-09-2008 12:37 PM|
|[Techpowerup.com] RV730 Tested, Performs Close to Radeon HD 3850||News||Reviews & News Online||0||03-09-2008 08:26 PM|
|AMD64 Overclocking Guide (07/11/06)||eva2000||General AMD Motherboards / CPU||7||02-11-2006 05:42 PM|
All times are GMT +11. The time now is 11:30 AM.