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Upgrading RAM, quite a few questions

by srcuse18 / March 26, 2006 8:02 PM PST

I'm looking to upgrade the amount of RAM I have in my system, but have run into a few technical things which I'm unsure of.

Information was collected from EVEREST

Current RAM:
DDR SDRAM DDR-333 256mb Unbuffered PC2700 (166MHz) DIMM CL2.5

I want to upgrade to 1GB, with either 1x1gb or 2x512mb. My motherboard only has 2 DDR DIMM RAM slots, so is it better to use 1x1gb incase I want to upgrade again in future? are there any disadvantages to only have a 1gb stick?

I've been searching around for PC2700 for the last few days, and just noticed that everest says it supports other types:

Supported RAM: DDR-266 SDRAM, DDR-333 SDRAM, DDR-400 SDRAM

Since DDR-400 is supported, does that mean I can use PC3200 ram instead of 2700 and have no problems? I'd rather buy the faster sticks if they'll work.

These are the PC3200 I've been looking at:

Are they any good and will they be supported okay?
My price range is

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a few answers
by jcasorso / March 26, 2006 8:19 PM PST

I'm not aware of any drawbacks using just 1 stick of 1gb as opposed to two of 512. Someone else might be able to enlighten us both.

If your motherboard supports DDR-400, go for that, of course - although, check what your CPU frequency is - some would say it's better to have the same frequency for both.

CL is latency - the lower latency, the faster the memory. From my own experience, CL2.5 is noticeably faster than CL3.

General advice - memory is key to computer perfomance; buy branded memroy from makers like Kingston, Crucial, Corsair, and not generic unknown makes.

A good place to get memory is from Crucial's own site - http://www.crucial.com/uk/ - they'll also advise you on the best compatible memory for your motherboard and their prices should be well within your budget.

Good luck!

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Judy's advice re checking at crucial is
by Ray Harinec / March 26, 2006 10:05 PM PST


In general, PC3200 [DDR 400] will run in the meory slot, HOWEVER it will only run at the slower speed that the mobo supports [DDR 333 in this case].

Everest says that it supports DDR 400, if so then the only question is whether or not the CPU that you have supports the 400 MHz FSB. If it does, then then you don't want a mix of PC2700 and PC3200 because all the memory will run at the lower speed.

We really need to know what CPU you have in the system.

IMHO tis very unlikely that you'll notice any difference between 2.5 and 3, However it is best to use sticks with the same CL to insure that the mobo uses the faster timing of 2.5. Judy seems to detect a noticeable difference.

You'll certainly see a difference running DDR 400 IF your CPU supports the 400 MHz FSB.

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some info
by srcuse18 / March 27, 2006 1:03 AM PST

I'll be getting rid of the PC2700 stick once I order the new ram, this is the info which everest gives me:

CPU Properties
CPU Type Intel Pentium 4, 2400 MHz (18 x 133)
CPU Alias Northwood, A80532
CPU Stepping C1
Instruction Set x86, MMX, SSE, SSE2
Original Clock 2400 MHz
Min / Max CPU Multiplier 18x / 18x
Engineering Sample No
L1 Trace Cache 12K Instructions
L1 Data Cache 8 KB
L2 Cache 512 KB (On-Die, ECC, ATC, Full-Speed)

CPU Physical Info
Package Type 478 Pin uPGA
Package Size 3.50 cm x 3.50 cm
Transistors 55 million
Process Technology 6M, 0.13 um, CMOS, Cu, Low-K
Die Size 131 mm2
Core Voltage 1.475 - 1.55 V
I/O Voltage 1.475 - 1.55 V
Typical Power 38.7 - 89.0 W (depending on clock speed)
Maximum Power 49 - 109 W (depending on clock speed)

CPU Manufacturer
Company Name Intel Corporation
Product Information http://www.intel.com/products/browse/processor.htm

CPU Utilization
CPU #1 2 %

CPUID Properties
CPUID Manufacturer GenuineIntel
CPUID CPU Name Intel(R) Pentium(R) 4 CPU 2.40GHz
CPUID Revision 00000F27h
IA Brand ID 09h (Intel Pentium 4)
Platform ID 1Fh (Socket 478)
IA CPU Serial Number Unknown
Microcode Update Revision 37
HTT / CMP Units 0 / 0

Motherboard Properties
Motherboard ID 07/03/2003-Springdale-G-6A79AABBC-00
Motherboard Name AOpen MX4SGVI-4DN2

Front Side Bus Properties
Bus Type Intel NetBurst
Bus Width 64-bit
Real Clock 133 MHz (QDR)
Effective Clock 533 MHz
Bandwidth 4267 MB/s

Memory Bus Properties
Bus Width 64-bit
DRAM:FSB Ratio 5:4
Real Clock 167 MHz (DDR)
Effective Clock 333 MHz
Bandwidth 2667 MB/s

Chipset Bus Properties
Bus Type Intel Hub Interface
Bus Width 8-bit
Real Clock 67 MHz (QDR)
Effective Clock 267 MHz
Bandwidth 267 MB/s

Motherboard Physical Info
CPU Sockets/Slots 1 Socket 478
Expansion Slots 3 PCI, 1 ADD
Integrated Devices Audio, Video, LAN
Form Factor Micro ATX
Motherboard Size 240 mm x 240 mm
Motherboard Chipset i865GV
Extra Features SilenTek

I'd rather not have to spend extra money to get 3200 if it'll only run at the 2700 speed. is that the case here?

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We need to know what FSB that the CPU
by Ray Harinec / March 27, 2006 3:25 AM PST
In reply to: some info

support. Seems that Everest says that the CPU has a multiplier of 18 and uses 166 MHz FSB to get that.
Intel quad pumps that to give a 533 MHz FSB

Everest reports 533 MHz FSB, HOWEVER that may simply because you hane PC 2700.

For the PC3200 to be effective the CPU would have to support an 800 MHz FSB.

A link to Intel CPU info


You will note that there are no 2.4 P4's that support 800 MHZ, max is 533. Thus PC3200 is of no real use. However is it really that much more expensive? May want to buy it for possible upgrading later.

However you have a fairly old chipset and thus an upgrade to a new mobo and Intel P4 it will likely use DDR2 memory. So, upon rethinking, probably not worth it.

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like the ram
by srcuse18 / March 27, 2006 5:37 AM PST

this is what everest reports for chipset:

Field Value
North Bridge Properties
North Bridge Intel Morgan Hill i865GV
Supported FSB Speeds FSB400, FSB533, FSB800
Supported Memory Types DDR-266 SDRAM, DDR-333 SDRAM, DDR-400 SDRAM
Revision / Stepping 02 / A2
Package Type 932 Pin FC-BGA
Package Size 3.75 cm x 3.75 cm
Core Voltage 1.5 V
In-Order Queue Depth 12

does that mean FSB800 is supported?

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Yes, HOWEVER you then must
by Ray Harinec / March 27, 2006 6:06 AM PST
In reply to: like the ram

install a CPU that supports the 800 MHz FSB.

As seen in the link that I provided, there are NO p4 2.4 GHz CPU that supports 800 MHz FSB.

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