so my corsair pc3200

kgod86 · 07-04-2006, 04:32 PM

operates at 200mhz and not 400 like it says? its ddr400

bratton · 07-04-2006, 04:34 PM

technically ram operates at half of what they tell you

TheChef · 07-04-2006, 05:14 PM

RAM 101

That should give you the gist of things.

kgod86 · 07-04-2006, 06:05 PM

well its dual channel, so doews that mean it operates together to work at 400mhz?

Bobo · 07-04-2006, 06:12 PM

Quote:

Originally Posted by kgod86

well its dual channel, so doews that mean it operates together to work at 400mhz?

No. The data output rate is roughly doubled, but each stick operates at the same speed

Quote:

Dual Channel. A popular buzzword, dual channel refers to the idea of running two memory controllers to feed data to the CPU thus providing a theoretical doubling of the throughput capacity (currently only available on select DDR and DDR2 configurations). The reasoning for this is simple:

DDR/DDR2 memory uses a 64bit interface to commuinicate with the memory controller. For 200MHz (DDR400) clock, the maximum throughput becomes 64bits x 200MHz x 2 ÷ 8bits/byte = 3200MB/s ~= 3.2GB/s (note here that MB is defined as 1-million)
The most straightforward way to improve performance (as demonstrated in the videocard market) is to double the memory interface to 128bits. Doing so would provide for 128bits x 200MHz x 2 ÷ 8bits/byte = 6400MB/s ~= 6.4GB/s of throughput. This however is too electrically complex to be implememented.
Now suppose we have two (or four) sticks of memory, each with it's own private connection to a memory controller (i.e., each stick or pair of sticks would have it's own 3.2GB/s connection to the memory controller). This would mean that the aggregate throughput is roughly 6.4GB/s. This is the principle behind dual-channel memory.
A comparison of single vs dual-channel memory is in VFAQ

kgod86 · 07-04-2006, 06:14 PM

Quote:

Originally Posted by Bobo

No. The data output rate is roughly doubled, but each stick operates at the same speed

so then my 200mhz memory is good tho right?

Bobo · 07-04-2006, 06:14 PM

Quote:

Originally Posted by kgod86

so then my 200mhz memory is good tho right?

Depends what you call good....if you are asking if there is something wrong with it, then no, it is supposed to be running at 200MHz.

kgod86 · 07-04-2006, 07:52 PM

Quote:

Originally Posted by Bobo

Depends what you call good....if you are asking if there is something wrong with it, then no, it is supposed to be running at 200MHz.

well what is the definition of good high quality memory?

Bobo · 07-04-2006, 07:55 PM

Quote:

Originally Posted by kgod86

well what is the definition of good high quality memory?

low timings, high speed

{LSK} Otacon · 07-04-2006, 08:08 PM

DDR stands for double data rate, which means 200mhz x 2 = 400mhz. Hope that sums it up.

So each stick is running at 400mhz. Dual channel widens the bandwidth for data to flow through. By as it says, making 2 channels instead of one.

07-04-2006, 04:32 PM	#1 (permalink)
kgod86 Gold Member Join Date: Jun 2006 Posts: 322	so my corsair pc3200 operates at 200mhz and not 400 like it says? its ddr400 __________________ www.KGodwinHomes.com

07-04-2006, 05:14 PM	#3 (permalink)
TheChef Diamond Member Join Date: Aug 2004 Location: New York Age: 17 Posts: 1,383	RAM 101 That should give you the gist of things. __________________ Athlon 64 3000+ Venice -- MSI K8N Neo4 Platinum Asus nVidia GeForce 6600 -- Corsair ValueSelect 1024mb Seagate 120GB Barracuda -- Xoxide X-Clear Case FOR SALE http://www.computerforum.com/47630-fs-a64-3000-6600-1gb-ram-w-stuff.html http://video.google.com/videosearch?q=mzvideos

07-04-2006, 06:05 PM	#4 (permalink)
kgod86 Gold Member Join Date: Jun 2006 Posts: 322	well its dual channel, so doews that mean it operates together to work at 400mhz? __________________ www.KGodwinHomes.com

07-04-2006, 08:08 PM	#10 (permalink)
{LSK} Otacon banned Join Date: Jun 2006 Location: Kansas Age: 19 Posts: 400	DDR stands for double data rate, which means 200mhz x 2 = 400mhz. Hope that sums it up. So each stick is running at 400mhz. Dual channel widens the bandwidth for data to flow through. By as it says, making 2 channels instead of one. Last edited by {LSK} Otacon; 07-04-2006 at 08:11 PM.

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07-04-2006, 04:34 PM	#2 (permalink)
bratton Gold Member Join Date: Jun 2006 Location: PA Age: 19 Posts: 343	technically ram operates at half of what they tell you