Is 1x256MB faster then 1x512MB RAM for 3Dmark01

[TM30]

the RAM is for a KT333 Board (last board with 3,3V AGP Support)

[Vapor]

Doubtful....but I have no hard evidence.

256 sticks can usually run faster though :stick:

[TM30]

sure, but its only a KT333 which can run about 200Mhz, probably more but due to the lack of an AGP clock fix the Graphics card will be the limiting factor...

[Vapor]

Then I see no reason why the 256 would be faster....

[TM30]

i mean at same speed.... so it doesnt matter if i use 256MB or 512MB?

[Vapor]

On a newer board 512 would be faster with bank interleve on....256 might not even be enough before Windows dips into the pagefile. I really don't know, but there's no way (that I can think of) a 256 would be faster.

[ReelMonza]

low latencies maybe ?

[Vapor]

Doubt it...a faster tref value maybe, but that's it (and that's like a .02% performance gain, LOL). I really think that 256MB isn't even enough for Windows + 3D01, so that would really slow things down.

[MusicIsMyLife]

If you run both sticks on same clocks and timings, 512 mb is faster than 256 mb because of better bank interleaving.

But in most cases you have to disable 1t command with 512 because the chipset can´t handle two banks with 1t. I´ve never seen 512 mb on kt333 with 200 mhz and 2-2-2-5 1t. Fastest I could reach was 191 mhz with 2-2-2-5 1T. But my OCZ EB needed 3.4 volt for this speed. It ran memtest without errors, but 3dmark returned to desktop.

So if you have a stick of 256 mb that does 200 2-2-2-5 1t, then go for it. If you are limited at about 180 mhz (maybe board or vidcard), you could try 512 mb. If you´re lucky, you could run 512 mb with 1t up to this speed without major problems.

[TM30]

i can run at 194Mhz without a problem... i have 1x512MB Twinmos Twister PC2700 wich reaches 2-3-3-6 at 194Mhz... but i want 2-2-2-5

[uOpt]

Single-sided sticks go faster because they put less load on the memory controller. There are no single-sided 512 MB modules to my knowledge, but most newer 256 modules are.

[deathelement]

There's actually single sided 512mb pc2700 Crucial ram...I could only pull off 2.5-3-3-5 with those sticks though.

[IamAnoobieCheez]

On a newer board 512 would be faster with bank interleve on....256 might not even be enough before Windows dips into the pagefile. I really don't know, but there's no way (that I can think of) a 256 would be faster.
Clock for clock, timing for timing, smaller amount of RAM is faster, period. Especially in apps that don't take huge amount of memory i.e. Quake3, 3Dmark 2001, or the like, 256MB of ram is more than enough. I always, always get better score with 256MB than the 512MB in a single channel mommyboard. That's a set-in-stone rule.


Of course in dual channel mommyboards w/ dual sticks would be an exception due to 128bit memory bus.





But in most cases you have to disable 1t command with 512 because the chipset can´t handle two banks with 1t.
yes..... we know that. But what he(original poster) is referring is 256mb vs. 512mb w/ same clock and latency settings. Overclockability and tweakability is whole another story. :)


I´ve never seen 512 mb on kt333 with 200 mhz and 2-2-2-5 1t. Fastest I could reach was 191 mhz with 2-2-2-5 1T. But my OCZ EB needed 3.4 volt for this speed. It ran memtest without errors, but 3dmark returned to desktop.
I used to run 512mb stick@ 200+mhz cas 2-2-2 1T command with KT333 boards. you just need a better ram to handle it.


but obviously we know the 256mb is easier to oc w/ tight timings.. :)

[MusicIsMyLife]

I used to run 512mb stick@ 200+mhz cas 2-2-2 1T command with KT333 boards. you just need a better ram to handle it.



I tried different memory sticks: TwinMos/Winbond BH5, OCZ EB and Mushkin Level II (but with low voltage). I never could run 200+ with 1t.



I should try my Mushkin Level II with 3.5+ volt on my 242,86 fsb kt333 (http://valid.x86-secret.com/show_oc?id=15218). :D

[TM30]

perhaps the board was the limiting factor

the KT333 boards from epox are the best ones out there, better than abit...

it supports Barton, has the 166Mhz divider and you can crank up your vdimm to 3,2v

its a Epox 8K5A2


@IamAnoobieCheez

okay so i will buy 1x 256MB Winbond Bh5 (Bh6 will also do the job i think...)