Post on 15-Nov-2014
description
AMD 770 Chipset based GIGABYTE motherboards
enable Triple core CPU to be turned into
Quad core CPUProduct Management Team
Index
Introduction
Gears you need
Step by Step
Proof and Performance Test result
Summary
Introduction
Why it can be achieved?
Answer: When AMD produces multi-cores CPU, for some quality control issues, (such as extreme high or low temperature), AMD samples out some quad core Phenom II / Athlon II CPU and turn it into triple core CPU for sale. So inside of a triple core CPU, it is still a quad core internally.
How to enable it?
Answer : To enable triple core CPU into quad core CPU, you need AMD SB 750/710 with EC circuit, special BIOS to allow AMD ACC (Advanced Clock Calibration) and AMD triple core CPU as well.
What’s benefit?
Answer : End user can get as a ‘Free’ bonus by purchasing a triple core CPU and turning it into a more expensive quad core CPU without paying extra. Performance also gains too.Warning : User has to be aware, AMD and
GIGABYTE will NOT honor and guarantee the performance and success of enabling this feature. Also the system stability may be effected.
Gears you need
To enable GIGABYTE AMD 770 chipset MB, you need following gears :
Warning : User has to be aware, AMD and GIGABYTE will NOT honor and guarantee the performance and success of enabling this feature. Also the system stability may be effected
Motherboard with AMD SB 750/710 + special EC mode BIOS :
MA770T-UD3P F2CMA770-UD3(2.0) FBMA770-US3(2.0) FB
AMD Phenom II or upcoming Athlon II Triple Core CPU
Step by StepStep One : Enter BIOS and verify
Hint : By press ‘F9’ in BIOS, you can see hardware informationIt shows current CPU is triple core Phenom II X3 CPU
It shows current motherboard model and BIOS version
Step by StepStep Two : Enter M.I.T Menu
M.I.T is centre of overclocking menu for advanced user
Step by StepStep Three : Enter Advanced Clock Calibration mode
Enter AMD ACC Menu for enabling special EC firmware
In default, the EC firmware will be set as ‘Normal’ mode, and ACC is ‘Disabled’. Now we are prepared to enable both.
Step by StepStep Four : Enable Hybrid EC + ACC Auto mode
Enter EC firmware selection menu, select ‘Hybrid’ mode to enable special tuned BIOS.
In ACC selection, default is ‘Disable’ , now go enabling ACC in “Auto’ mode to enable Sb750/ SB 710 ACC feature.
Step by StepStep Five : Save and Exit BIOS
BIOS will automatically update new EC firmware and re-boot the system again to apply quad core setting. Please do turn off or reset system during processing.
Step by StepStep Six: Verify it
After BIOS enables Hybrid EC + ACC, you can see, in BIOS hardware information (‘F9”) The current CPU now is AMD Phenom II X4 8700e !
Step by StepStep Six: Verify it in post
Before After
Proof and Performance Test resultCheck ET6 under Windows 7 RC
Proof and Performance Test resultPerformance Test result 1 : CineBench R10 Multi CPU score
Quad Core EC enable
Standard Triple Core
8015
6122
Quad Core EC enable
Standard Triple Core
148Watt
137 Watt
Proof and Performance Test resultPerformance Test result 2 : 3DMark 05 CPU score
Quad Core EC enable
Standard Triple Core
Quad Core EC enable
Standard Triple Core
145Watt
140 Watt
Summary
After tests we can say :
GIGABYTE Hybrid EC firmware with ACC works
Performance gains depends on application 3~30%
Enabling Quad Core will increase slightly more power consumption
In test, with exclusive GIGABYTE technology, to enable this hidden trick from AMD CPU is simple enough. No hassle, no pain.
Models available
MA770-UD3 (Rev. 2.0)
MA770-US3 (Rev. 2.0)
MA770T-UD3P