Common misconception regarding PS3's ram and cache

PS3 has 256mb of RAM ????????????

definitely not

PS3 has 256mb of GDDR3 ram at 700 mhz and 256mb of XDR ram at 3.2ghz. In total ps3 has 512mb of ram . RSX has full access to the XDR ram (provided 32mb is kept for OS ).

ps3 has 512kb of L1 cache and 256kb of L2 cache per spe. In total ps3 has 2.3mb of CACHE memory
X360 has just 1mb of shared cache memory.Additional cache ensures frequent direct and indirect mapping

XDR works by a pointer to pointer technology and unlike x360 RSX has two buses one for GDDR3 at 128bit and one for XDR at 64bit.

64bit????

XDR works by a pointer to pointer technology and needs very small buswidth for execution. It transfers data in the form of multiple small packets rather than a whole chunk (as in case of GDDR3). XDR has very low latency and is way more efficient that GDDR3/GDDR4. a 16 bit bus is usually enough for XDR .

Because of the difference in latency and speed of the 2 rams devs sometimes cannot synchronize the rama allocation concurrently . Hopefully this will be fixed in the upcoming SDK revision

[socomnick]

Why does anyone approve this garbage :/ We know the ps3 has 256mb of ram who cares already.

[nasim]

you know nothing and talk trash

[SabreMan]

you obviously can't read, it's common knowledge the ps3 has 512mb of ram in two split 256mb ram modules

ignorance is something you seem to be very good at !!

[Lionsguard]

the award for best reader on this site. Congratulations!

[kvh22000]

that this article is right approve it. Although you may disagree it does have 512 mb of ram

[Skerj]

People are still going to come in and spout nonsense regardless of what's pointed out to them.

[MRMagoo123]

To socomnock:I thought everyone knew it had 512 ram its a fact how can anyone prove otherwise ive not seen anything about it having less even pc sites that have done spec checks on them know it has 512 god xbots r dumb why on earth are ur parents buying u xboxs when u clearly dont have the brain to switch one on

[NASIMPLSSTFU]

Nasim, you SUCK!

[PopEmUp]

I don't think he suck since he state the fact, but I think your suck simply you can't prove any facts so just get the F outta here and do some research

[Bullseye]

Both consoles only have 512MB RAM. Doesn't matter how you view it or how you twist it, it'a pathetic amount by today's standards. Neither console has enough, thats the truth.

[wicked]

Thanks, now I understand why the PS3 has so many frame rate problems...