2 and 3 slots dual channel etc

AndyH8 · 06-20-03, 05:43 PM

Hi.
I have a Soltek 75FRN2 and have 3no 256 pc3200 ddr Kingston DDR valueram.
I have benched in Sandra and with 2 slots used ie 1 and 3 (512Mb), this is quicker than with all three slots used (768Mb)
Any reason for this?
Thanks
Andy

hoytron · 06-20-03, 06:52 PM

You should read up on dual channel DDR. You need to install RAM in pairs for use in dual channel systems.

AndyH8 · 06-20-03, 07:44 PM

I ahve read in the manual that you can gave three and still have dual. Either the manual is wrong or I'm missing something. I have relied on the manual before purchasing the third stick.
Andy

Bobby · 06-20-03, 07:47 PM

Once you install that third stick, your mem speed drops to the lowest common denominator. In effect, you lose dual channel speeds with the 3rd stick. Now populate all four banks and you'll be back to dual channel, provided the 4th stick is the same as the 3rd.

-Bobby

AndyH8 · 06-20-03, 08:27 PM

the mobo only has three slots

06-20-03, 05:43 PM	Thread Starter #1
AndyH8 Registered Join Date: Jan 2002	2 and 3 slots dual channel etc Hi. I have a Soltek 75FRN2 and have 3no 256 pc3200 ddr Kingston DDR valueram. I have benched in Sandra and with 2 slots used ie 1 and 3 (512Mb), this is quicker than with all three slots used (768Mb) Any reason for this? Thanks Andy
	QUOTE Thanks

06-20-03, 06:52 PM	#2
hoytron Member Join Date: Dec 2001 Location: Duluth, MN	You should read up on dual channel DDR. You need to install RAM in pairs for use in dual channel systems.
	QUOTE Thanks

06-20-03, 07:44 PM	Thread Starter #3
AndyH8 Registered Join Date: Jan 2002	reply I ahve read in the manual that you can gave three and still have dual. Either the manual is wrong or I'm missing something. I have relied on the manual before purchasing the third stick. Andy
	QUOTE Thanks

06-20-03, 07:47 PM	#4
Bobby Member Join Date: May 2003 Location: New Jersey	Once you install that third stick, your mem speed drops to the lowest common denominator. In effect, you lose dual channel speeds with the 3rd stick. Now populate all four banks and you'll be back to dual channel, provided the 4th stick is the same as the 3rd. -Bobby __________________ Gigabyte GA-Z68-D3 Ver 2.0 Bios FB \| Intel i5 2500k @ 4.2ghz \| CM Hyper 212 Evo \| Corsair vx550w 2 x 4gb Kingston HyperX \| Asus HD6950 DCUII 2gb \| LG 22" Widescreen \| MS Windows 7 Ultimate 2 x 160gb Seagate SATA Raid0 \| 500gb Seagate \| 1tb Seagate \| LiteOn DVD 16x \| Toshiba 16x/48x DVD Enermax CS10181-B \| Audigy 2 OEM \| LogiTech Z-640 \| LogiTech G5 \| Tt Hardcano 9 Fan controller Heatware
	QUOTE Thanks

06-20-03, 08:27 PM	Thread Starter #5
AndyH8 Registered Join Date: Jan 2002	reply the mobo only has three slots
	QUOTE Thanks

2 and 3 slots dual channel etc

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