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AMD Motherboards & CPUs Questions or comments on AMD products?


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  #1 (permalink)  
Old 19th May, 2009, 03:36 AM
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Overcloking the true potential of a motherboard.

Hi there.
I have recently buy a msi 790fx-gd70 and it got many overcloking feature... so many that I just don't know where to start!

Just for my memmory
I got this:
tRCD
tRP
tRAS
tRTP
(I know these one..., but the next one... )
tRC
tWR
tRRD
tWTR
tRFC0
tRFC1
tRFC2
tRFC3
and it goes on and on...

and there are some for my cpu, I know some of them... and I could guess some but other not...

CPU vdd voltage
CPU-nb vdd voltage
CPU voltage (know it!)
CPU-nb voltage
CPU pll voltage
CPU ddr-phy voltage
DRAM voltage (know it!)
DDR vref Voltage
NB Voltage (know it!)
NB Pci-e voltage
NB pci-e I/O voltage
HT link voltage
SB voltage (guess it!)

I see you comming at 245 km/h...
You will never use them all
But I really want to fully understand these thing,even if I will never use them completely.
Do you have any ressource, blog, website, book or whatever to understand those?
Thx!
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Old 19th May, 2009, 03:26 PM
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Arrow Where to start from...MSI mobo Manual

This is the first place I would start with understanding all the settings available on your mobo is the MSI site.
See if there is an A-Z PDF (Adobe reader) Bios Manual explaining the settings & what they do.
Intel had just such a manual for my mobo & there might be one for yours via the MSI site.

Mobo Manual: See if they have an online PDF manual for your mobo as most of the time these will go into more detail than the one that comes with the purchase.
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Old 19th May, 2009, 04:09 PM
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There's a fair bit of information here: Tweakers.fr
However, I found the tRFC explanation to be a bit poor, so I put together the following:

tRFC/tRFC0/tRFC1/tRFC2/tRFC3
All the tRFCx figures relate to a bank of memory, as memory can be refreshed independantly. DRAM memory needs periodic refresh cycles to ensure that it retains the information stored in it. In order to perform a refresh, the memory has to be idle for tRP (Precharge) period before a refresh can occur. Once a refresh starts, the RAM isn't accessible until the end of the refresh has happened. The tRFC figures are how long it takes the RAM to complete its refresh cycle. This is highly dependant on memory size and frequency. If you attempt to access the DRAM before the end of the refresh cycle, it won't be refreshed properly, and the DRAM contents will be corrupted. If it's too high, the system will still be stable, but the memory will remain inaccessible for longer than necessarily, reducing DRAM performance.
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Old 20th May, 2009, 02:53 AM
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re: funny...

Thx for the link, will have a great lecture ^^

and check out what I have found in my manual:

CPU VDD Voltage (V)/ CPU-NB VDD Voltage (V)/ CPU Voltage (V)/ CPU-NB
Voltage (V)/ CPU PLL Voltage (V)/ CPU DDR-PHY Voltage (V)/ DRAM Voltage
(V)/ DDR Vref Voltage (V)/ NB PCI-E I/O Voltage (V)/ NB Voltage (V)/ NB PCI-E
Voltage (V)/ HT Link Voltage (V)/ SB Voltage (V)
These items are used to adjust the voltage of CPU, Memory and chipset.

Really? Thx MSI, you really help me out...


Any guess on what those do?
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Old 20th May, 2009, 04:37 PM
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Arrow

Quote:
Originally Posted by Mavhenz View Post
Thx for the link, will have a great lecture ^^

and check out what I have found in my manual:

CPU VDD Voltage (V)/ CPU-NB VDD Voltage (V)/ CPU Voltage (V)/ CPU-NB
Voltage (V)/ CPU PLL Voltage (V)/ CPU DDR-PHY Voltage (V)/ DRAM Voltage
(V)/ DDR Vref Voltage (V)/ NB PCI-E I/O Voltage (V)/ NB Voltage (V)/ NB PCI-E
Voltage (V)/ HT Link Voltage (V)/ SB Voltage (V)
These items are used to adjust the voltage of CPU, Memory and chipset.

Really? Thx MSI, you really help me out...


Any guess on what those do?
Some manuals (Like Intel's) will actually be helpful & explain what each setting does, but apparently this is not the case with MSI...

Sorry, but it was at least worth a shot to check out & see.
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Old 21st May, 2009, 12:17 AM
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re

Alright!
Will have a look!
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