2x BDrom vs 12x DVD ??

[dbakerstl]

I think there is an underlying problem when people are saying that a 12x DVD can read data faster then a 2x BDROM, now the facts are TRUE in that the max, throughput for the 12x DVD is higher than a 2x BDrom.. but In my opinion you need to take into account error correction, etc.. When you have a rotating medium the faster the disc spins the bigger chance of read errors, I mean WHO has actually seen a DVD copy at the "MAX throughput" the drive is capable of? Not me... you get close when you have a NEW un touched DVD in the drive, but it seems that error rates and re-reads go up as the disk ages.. Im curious about the longevity of the BDroms,

1.7 How fast can you read/write data on a Blu-ray disc?
According to the Blu-ray Disc specification, 1x speed is defined as 36Mbps. However, as BD-ROM movies will require a 54Mbps data transfer rate the minimum speed we're expecting to see is 2x (72Mbps).

That is DAMN fast... close to 7MB per second... thats fast...

NOw lets consider this: Since Blu-ray's site said that a 12x BDrom would be rotating at 10,000 rpm then we can say that a 2x is about 1700rpm, now compare this to the 12x dvd

Rotational speed
Approx. 7,070 rpm (DVD-ROM single layer)
Approx. 5,180 rpm (DVD-ROM dual layer)

http://www.hitachi.us/supportingdocs...s/gd7500,0.pdf

The BDrom rotates 4x slower than a single layer DVD, and I would guess that even though the 12x drive has a HIGHER transer rate, I think we will see that the two drives will be almost the same when you look at the fact that when a drive has problems reading a disk it will lower the rotational speed of the drive thus lowering its total throughput. I could actually see in certian situation where BDroms at 2x would transer at higher speeds than the 12x dvd drives...

What are your views one this??

[Perfect Sin]

I like your insight into this issue. It deffinatly makes sense.


But this should be in the Tech section.

[FLCLjazz]

i understand oyu but i need a little bit more information and theorys on how dvds read and BD reads

[Aleman]

A 12x DVD drive transfers faster than a 1x Blu-ray drive and a little more than a 2x Blu-ray drive.

Hopefully the PS3 has a 3x or faster drive, otherwise load times might be a concern.

[GabeJE]

A 12x DVD drive transfers faster than a 1x Blu-ray drive and a little more than a 2x Blu-ray drive.

Hopefully the PS3 has a 3x or faster drive, otherwise load times might be a concern.

That is what the tech specs say on paper but I think what danursuline
is getting at is that in real world situations a 2x BD might beat a 12x DVD due to a difference in efficiency. Whether or not that's true I have no clue... What I do know is that whatever the speed the BD ends up being it will probably be a whole lot quieter than the Xbox 360's DVD drive.

[KBsmoker]

loads time wont be a problem at all with the PS3. Blu-ray is great for streaming data off discs. A lot better than dvds drives.

Also another thing is blu-ray drives will be a lot quieter than the dvd drive b/c it doesn't have to spin as fast. Also it will put off less heat b/c it runs slower.

[Crazy Phat]

It is also unscratchable and a dust bouncer. It also prevents fingerprints.

[KBsmoker]

here a graph just of read speed. This is just one factor in the performance of a drive.

[Thorzilla]

Hey there:

here a graph just of read speed. This is just one factor in the performance of a drive.

Nice find, or nice work. Is the difference between BluRay and DVD actually so big?
Wow, im very impressed now that i have seen this in chart not in paper, it sure looks good.
And im not quite good at understanding the readers capabilities, but i think that 12xDVD reads slightly faster than 2xBD, based on KBsmoker chart.

A 12x DVD drive transfers faster than a 1x Blu-ray drive and a little more than a 2x Blu-ray drive.

Hopefully the PS3 has a 3x or faster drive, otherwise load times might be a concern.

I am with aleman, i hope loadtimes are not a pain in the butt
OVER.

See ya!

[Firefox]

can anyone tell me the image quality difference between hd-dvd and blu-ray?

[fis]

IS there any? Isn't it simply that Blu Ray can store more data so you can have higher/more High Definition content on one disc?

And it's designed to stream data more efficiently?

[Helstar]

A 12x DVD drive transfers faster than a 1x Blu-ray drive and a little more than a 2x Blu-ray drive.

Hopefully the PS3 has a 3x or faster drive, otherwise load times might be a concern.

It's true for TOP SPEED ONLY, so it means nothing. What really matters is AVERAGE READ SPEED (the ones we see in real world, like reading files for a console game).

BR drives have an average speed much closer to top speed than DVD drives.

So, even if PS3 comes with a 2x BR drive, it will read more bits per second than X360 12x DVD drive, even thou in theory it has a lower TOP theorectical speed. Real world is the only one one should care about.

[Smily0012]

One advantage Blu-ray has over Dvd is the Seek time.

[Lp Chris XII]

danursline, LT1FUN beat you to it by one minute, but he posted it in the wrong section . Although the two articles are not identical, we've had three threads created today on this topic, all coming from different articles, but it would be pointless to keep each of them open, so I'll go with the first one posted.

[curryking1]

There has been a trailer recently released for Tim Burton's upcoming film, 9. Now, while we don't normally promote a movie on PlayStation Universe that isn't clearly being released on Blu-ray, our hands were tied with this one. 9 seems to take a page straight out of Media Molecule's book and throws it into its own feature film. Coincidence, much like the similar LBP costumes of contest entrants, could be a legitimate word used in this situation, but Media Molecule must be somewhat flattered by this showing.

By now, you're definitely curious to see what we're talking about, so let us show you. We've included the trailer below for you to enjoy and hopefully you see what we're getting at.

[The_Only]

Yup, two more hours then i'm done for the next couple of days -- so i'll get anything you do up during that time.

Editing now.