This could be the end of the line...
Are you a fan of Intel CPUs but also love overclocking? Then there may be a reason to not look forward to the upcoming Sandy Bridge.
According to slides shown by Hong Kong-based HKEPC's YouTube channel, Sandy Bridge will have a single single internal clock generator issuing the basic 100MHz base clock that'll run for the USB, SATA, PCI, PCI-E, CPU cores, Uncore, and RAM.
The clock generator will be a part of the P67 chipset and will transmit via to DMI bus to the CPU. This means that the user won't be able to tweak the CPU speed without affecting the entire system.
Bit-tech claims to have spoken to one of its Taiwanese motherboard sources, and early tests show that even upping the base clock by a measly 5 MHz caused the USB to fail and SATA bus to corrupt.
We're sure that motherboard makers are doing everything they can to come up with a way around this, which could make for a huge competitive point that'll cater to the enthusiast market.
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This post may not seem too much like a question but when users post an article they are generally looking for opinions or thoughts on it.
currently, Intel has not released any info to the motherboard makers on how to adjust any multipliers, but if they ever do, you will need to be able to control those other components in 1 MHz increments even when the base clock is adjusted. Even if multipliers can have a fine control that allows for 1MHz increments, that will all change once the base clock is adjusted. and remember we are talking about components that cant handle any overclocking so at best we will end up with an overclocked CPU and everything else underclocked and that's. even if intel ever allows control over those components
Answer by Razor512 · Jul 29, 2010 at 05:10 AM
If motherboard makers do not find a way around this, it will be a big problem for overclockers as users simply wont be able to overclock.
When buying a CPU, the product description never shows info on the inner workings of the CPU or how it interacts with the motherboard. so you can have many people building a PC with the "latest" intel CPU then wondering why they cant overclock.
The problem is will they be able to find a way around this?
If a single clock speed is linked to all of those parts of the system then how will they fix this. They may find a way to change the multipliers but that's usually not a fine enough control when overclocking as you in most cases end up with parts of the system being underclocked (as you will often end up in situation where you have 2 multiplier choices either underclocked or overclocked to a point where it is unstable or scale back the bus speed so the CPU cant hit it's full overclock in order to allow the other components to at least hit their default speed. Overall the customer loses with this move.
Answer by Leapo · Jul 29, 2010 at 12:59 PM
You can overclock your CPU just fine WITHOUT ever touching the front side bus speed. All you need to do is get a processor with an unlocked Core Multiplier. This allows you to increase the number that the FSB clockspeed is multiplied by to create the CPU core clockspeed.
100MHz Base Clock * 20 Core Multiplier = 2000MHz (2.0GHz)
100MHz Base Clock * 30 Core Multiplier = 3000MHz (3.0GHz)
You just increased the speed by 1GHz without touching the base clockspeed at all. This is very simple and current processors already do it. The problem is, Intel usually charges a lot more for processors that have an unlocked core multiplier, because it makes them so easy to overclock.
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