533mhz ram on Amd 64bit

[akshayt]

Hi

I have Amd 64 bit 3200 winchester + Asus A8N-E
I want to buy 2 modules of ram , will these work

A) 2 512mb ddr 400 Hynix d43 chips
ddr 533
2 1024mb ddr 400 hynix d43 chips
ddr 533



B) 2 1024mb transcend ddr 400
ddr 533
2 512mb ddr 400
533

I want to run in dual ch with my amd 64bit but don't want to increase the fsb of my cpu . I don't want to loose warranty by overclocking.
How can I let ram speed be 266mhz( X 2) and fsb be 200mhz( X 10 =2ghz)?

 

[NokiaDude]

It'll work. It'll automatically run as fast as it can. Which I believe will be DDR400.

 

[d2arcturus]

Make sure it's PC4200 and not DDR2 RAM.

 

[akshayt]

but why won't it work at ddr 533?

don't people oc at more than 400mhz and sometimes even use ram like ddr 550 etc

 

[d2arcturus]

He means the RAM will run with the stock CPU at 200MHz. If the CPU is OCed to 266 then the ram will run at 266.

So: your 3200Wini is at 2GHz - 200x10, just OC to 266 and you're at 2.66GHz. I don't know if the Wini can get that high on air though... maybe you could go with some DDR500 (PC4000) or DDR466 (PC3700).

 

[Some1ne]

How can I let ram speed be 266mhz( X 2) and fsb be 200mhz( X 10 =2ghz)?

To do that, specify a FSB speed of 266 MHz, a CPU multiplier of 7.5x, and a memory divider of 1:1. This will give you 266 MHz on the RAM, and about 2 GHz on the CPU.

Note however that there are very few DDR400 modules that will run stably at DDR533 like that. What you probably want to do is get some DDR500 modules instead...they'll give you a much better chance of being able to hit DDR533.

 

[SrGuapo]

Originally posted by: Some1ne

How can I let ram speed be 266mhz( X 2) and fsb be 200mhz( X 10 =2ghz)?

To do that, specify a FSB speed of 266 MHz, a CPU multiplier of 7.5x, and a memory divider of 1:1. This will give you 266 MHz on the RAM, and about 2 GHz on the CPU.

Note however that there are very few DDR400 modules that will run stably at DDR533 like that. What you probably want to do is get some DDR500 modules instead...they'll give you a much better chance of being able to hit DDR533.

Half multis don't work too well. The RAM worn't actually be running at 266, it will be less... You cannot run RAM faster than the HTT on A64s AFAIK (correct me if I'm wrong). You will have to OC the HTT, which measns you will have to lower the multi or just CO the CPU. Why don't you want to OC?

 

[aatf510]

Some crappy motherboard wouldn't even run on higher HTT, so your best bet is to let it run @ default DDR400 (200MHz),
Athlon64 are getting enough memory bandwidth already, there CAS latency is what increase it's performance.

 

[akshayt]

asus a8n-e is not crappy at ocing though its memory voltage max is 3v or something.

Also,ocing ruins warranty.I don't to oc right now
But isn't there something as FSBRAM ratio
if it is at 3 : 4 by defual with this ram then cpu will be about 400 and memory abt 533

 

[akshayt]

replhy please.

 

[imported_rod]

Yeah, it will work, as long as it is DDR (not DDR2) RAM.

But if you're not raising the HTT above 200 (DDR400), then you will recieve no benefit.

RoD

 

[wseyller]

memory divider is only good for lower memory speed after overclocking when the memory is unable to handle increased speeds.

 

[Some1ne]

memory divider is only good for lower memory speed after overclocking when the memory is unable to handle increased speeds.

That's no longer true as of the "revision e" memory controller. Chips that use this controller can run the FSB/HTT at 200 MHz and the RAM at up to 250 MHz (DDR500) by selecting dividers that cause the RAM to actually run at faster speeds than the FSB/HTT. This is kind of irrelevant though, as the thread starter has a Winchester based Athlon64, which does not have the "revision e" controller and which cannot make use of these new dividers.

Half multis don't work too well. The RAM worn't actually be running at 266, it will be less

I remember hearing something like that, although I thought it only applied when a divider of something other than 1:1 was specified. Are you saying that 266 x 7.5 will actually result in runtime settings of 250 x 8.0? If so then it looks like the only real option would be to overclock the CPU a little bit by running at 266 x 8.0 @ a 1:1 divider on the RAM (which gives DDR533 on the RAM, and 2128 MHz on the CPU, a modest overclock that a 3200+ Winchester should have no problems with).

 

[aatf510]

Originally posted by: Some1ne

memory divider is only good for lower memory speed after overclocking when the memory is unable to handle increased speeds.

That's no longer true as of the "revision e" memory controller. Chips that use this controller can run the FSB/HTT at 200 MHz and the RAM at up to 250 MHz (DDR500) by selecting dividers that cause the RAM to actually run at faster speeds than the FSB/HTT. This is kind of irrelevant though, as the thread starter has a Winchester based Athlon64, which does not have the "revision e" controller and which cannot make use of these new dividers.

Only a copule motherboard with an BIOS update would let you see the extra divider.

 

[Noriaki]

Originally posted by: toattett

Originally posted by: Some1ne

memory divider is only good for lower memory speed after overclocking when the memory is unable to handle increased speeds.

That's no longer true as of the "revision e" memory controller. Chips that use this controller can run the FSB/HTT at 200 MHz and the RAM at up to 250 MHz (DDR500) by selecting dividers that cause the RAM to actually run at faster speeds than the FSB/HTT. This is kind of irrelevant though, as the thread starter has a Winchester based Athlon64, which does not have the "revision e" controller and which cannot make use of these new dividers.

Only a copule motherboard with an BIOS update would let you see the extra divider.

True, but it is possible, which I think was all his point was. However, it's also not terribly relevant since the original poster doesn't have a RevE core.