What is 2T & 1T mean for RAM?!

[BUrassler]

I have a 754 mobo, so I am not running dual channel for memory, but I am 1T right now with my 2x512 mushkin special 2-2-2. But I am about to add a 512 of Corsair XMS pc3200 and I think that means I will go to 2T. Does that matter? THanks!

 

[ixelion]

I doubt you will notice a diffrence, its not like your 3dmark 03 score is gonna drop a thousand points if you care about that.

Besides I think it will only go to 2T if you have more than two DIMM slots occupied but im not 100% sure about that.

 

[imported_Tick]

For 754, it's with more than 2 sticks. Anyway, you'll never notice.

 

[BUrassler]

So obviously 1.5 gig at 2T is better than 1 gig at 1T, right?

 

[ixelion]

Actually I read several posts about 1.5GB being slower than 1GB, I have no idea why this is the case you may want to do a search, if you want more than 1GB, you will see much better performance with 2GB anyway.(where it is needed)

 

[BUrassler]

Was concerning going from a dual channel setup to a single channel setup though? B/c I am not running dual channel either way, so 1.5 has to be better than 1.0 right?

 

[monster64]

I was just about do the same on socket 939 though and I did a performance test. With 1T I got 113 fps on the source stress test (1280x1024 aa x4, af x8, all settings maxed.) Then I ram it at 2T just to see what it would be like with 4 dimms and I got 112 fps. As for latency in everest home edition, it went from 40 to 45, memory read basically stayed at 2700 mb/s but write dropped from 2600 to 2100. But as I said before, the source engine (cs:s source+hl2 +more to come) is actually pretty cpu dependant (ram+cpu) so any changes to the cpu/ram should result in a significant change to fps yet it didn't do anything. I ram the test a couple more times at 1T and 2T to make sure there were no bad renders or anything. Results stayed basically exactly the same with 2T actually getting a higher fps a few times because I was able to increase my memory speed due to the loosened 2T timing.

 

[spiritwalker2223]

If you have an older core you might lose some of your ram speed too. They would clock your DDR400 down to DDR333. I believe that was the newcastle and winchester cores.

 

[Bona Fide]

Originally posted by: BUrassler
Was concerning going from a dual channel setup to a single channel setup though? B/c I am not running dual channel either way, so 1.5 has to be better than 1.0 right?

No REAL difference between dual-channel and single channel. Maybe a few frames per second...5-10% drop in benchmarks. But you should make up for that with the extra 512MB of memory.

 

[monster64]

Check it out
http://www.anandtech.com/cpuchipsets/showdoc.aspx?i=2330&p=3