Does anyone know if this is possible. Did AMD imporve the Memeory controler even more for the X2 so this can happen?
AthlonX2 with 4GB(4x 1GB) @ 1T??
- Thread starter Lord Banshee
- Start date
As much as people had hoped to this effect, AMD really didnt do a thing in this dept. If you want 4GB 1T and DC you would be forced to buy an i955X chipset. (ie Intel is the only one able to handle that density worth a damn). Infact i955X chipsets can handle up to 8GB of RAM.
i dont think so. it is still the revision E. and i havent heard about it. i could be wrong though.
Honest to god, I have friends who have physically tried. Some can, most cannot. If you REALLY want to give this a shot you need an FX-type/X2 core. Ie Sandiego / Clawhammer / Manchester / Toledo, etc etc. Those were the only ones that could even do it.
Capt Caveman
Lifer
- Jan 30, 2005
- 34,543
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I'm pretty sure you'll be running at 2T. The memory controller was improved so that using 4 dimms won't drop the memory speed down to 333 but the 2T issue wasn't fixed.
I guess the other option is finding single sided 1GB stick lol.
Sentential,
The AMD Dual Cores or more attractive to my customers right now. It seem it is either AthlonX2 with 4GB of RAM or Dual DualCore Opteron with 4GB of RAM.
I was hoping to save him some money with the AthlonX2 as Quad-CPU support is that great compared to the difference Dual_Support makes, but specially looking into the programs he uses to see if Quad will make a difference enough for the price.
Sentential,
The AMD Dual Cores or more attractive to my customers right now. It seem it is either AthlonX2 with 4GB of RAM or Dual DualCore Opteron with 4GB of RAM.
I was hoping to save him some money with the AthlonX2 as Quad-CPU support is that great compared to the difference Dual_Support makes, but specially looking into the programs he uses to see if Quad will make a difference enough for the price.
Im not suprised by that at all seeing the obvious peformance benefits. I was simply anwsering the question.
Which of course, unfortunatly is no. The only one that can officially support that much (on desktop), right now, is Intel. (which can support up to 8GB)The difference between 1t and 2t in most applications is less than 3% from the tests done here in the forum by members. The great advantage of Venice/San Diego/Toledo is that they can run 4 dimms at PC3200 timings instead of PC2700. It is the price you pay for an onboard memory controller that is superior to Intel's solution in performance but not in upgradeability.
if you need/can use 4GB of ram (which is rare) then the penalty for going to 2T is really not that bad. However for most things I don't think you'd ever need more than 2GB, but if you're among the minority...
Lol. I can't seem to find CAS specs on it though... Maybe wait for the 'extreme edition' for $8k?
The 955X chipsets only use DDR2, so you're going to get held back a bit in memory performace due to the higher latency of the DDR2 compared to low latency dual channel DDR on the A64 X2 platform. Unless I missed some recent new development in the DDR2 arena, I would think that the 955X would tail the X2/nForce 4 combo when it came to memory performance (if you were using low latency DDR on the nForce, that is).
Yeah Capt Caveman. I asked the same question (but for the San Diegos) over at Extreme Systems and the best results were that people were able to run 4x512MB at DDR400 but still at 2T.
I don't think they revised to memory controller on the X2s' from what comes on the San Diegos, but I could be wrong.
Define "worth a damn"? the memory performance of any amd is gonna better better than that of a comparable intel, 1T or 2T. Also, please find me a person that needs 8gb of ram in a desktop board, I would like to shake their hand. :disgust:
The computer will be used for engineering application like Algor, CFDesign, FEAMAP, CAEFEM, lada lada lada lol. The more RAM the better they love RAM, a matrix of a matrix of a matrix etc, gets big.
I wish there was benchmarks on real applicatoins like these to see if Quad core(dual dual opterons) even helps, but no there is always stuff like server database crap lol. I am thinking no and thats why i am pushing for X2 now and Quad CPU next year.
NOt sure at the moment thinking about Dual Opteron 252 with either the ASUS K8N-DL or the Tyan K8WE. But this system is about double the price for basicly same proformance if not better.
I wish there was benchmarks on real applicatoins like these to see if Quad core(dual dual opterons) even helps, but no there is always stuff like server database crap lol. I am thinking no and thats why i am pushing for X2 now and Quad CPU next year.
NOt sure at the moment thinking about Dual Opteron 252 with either the ASUS K8N-DL or the Tyan K8WE. But this system is about double the price for basicly same proformance if not better.
Rock Hydra
Diamond Member
- Dec 13, 2004
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It think the RAM is legit DDR PC3200, but the pic is just an old RAM stock photo that some web designer used because they didn't know the difference (probably an Apple user that thinks it all runs on magic smoke
)
JBDan
Platinum Member
- Dec 7, 2004
- 2,333
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I know the differences have been noted to be minimal between 1T and 2T but couldn't you just use the A64 Tweaker and force 1T? I do it with my A8V Deluxe because the last 3 bios's for the board have an "issue" enabling 1T. Don't really know just guessing.
"worth a damn" meaning officially
What's further ironic is that 1/2 the time Intel uses 2T by default. So its kind pointless either way.He could, but odds are very good the system wouldn't even post. If the command rate is too fast, commands get sent before the RAM chips are selected and ready. Corrupted commands take you straight to BSOD, do not pass go, do not load your OS.
Fortuantely, 2T won't cause much of a performance hit. It will certainly be less than the hit for running a 1 or 2 GB swap file.
One possible hitch: There used to be an issue with both windows and some BIOS's that only allowed access to 3GB of a 4GB setup.
If you are doing something that takes alot of ram, then you must remember that in ALL scenarios, more ram is greater than fast ram. On Athlon 64s, memory speed and memory timings mean next to nothing for performance, you can use the worst timings in the world and be no more than 5% slower than someone who bought $300 "super" ram.
Pentium 4s however, supposedly get pretty good performance boosts out of lower memory timings, but don't quote me on it, for I have yet to test it myself and this is only what I have heard.
Pentium 4s however, supposedly get pretty good performance boosts out of lower memory timings, but don't quote me on it, for I have yet to test it myself and this is only what I have heard.
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