Is this the truth about Blu-ray Drives?

dodo3

Newcomer
TRega123 said:
Although you didn't provide a real link, you are correct. Every optical drive starts with CLV or constant linear velocity drives and then progresses to CAV or constant angular velocity.

CLV is good at reading data in adjacent sectors, however when data is scattered all over the disk (as is the case with games) there is a whole lot of slowdown due to poor seek times. CAV does not have this problem.

Both the sega CD and the PSP had CLV drives, and they have both demonstrated poor loading times. The good news is, PS3 games won't be on blu ray. They will be on DVD, just like xbox 360 games. They will not be on blu ray because of the poor seek times from the CLV blu ray drive.

I got this from a user from GameSpot (yes I know), is this really case with Blu-ray Drives and do you think games for the PlayStation 3 won't use Blu-ray Discs?

I know this may or may not be a stupid discussion, but can someone please answer this.
 
Cost. Space. Seek Times. Reliability. Exclusive or multi-platform?

These are all things that will factor into a game using Blu-Ray or not. Why put something on Blu-Ray with slower seek times, when it's cheaper and runs better if you put it on DVDs? I wouldn't be shocked if there were more multi-DVD games on PS3 then Blu-Ray titles... Of course exclusives will probably take advantage of it, if just to set an example.
 
Basically the lowest end of speeds that you'd expect CAV or Z-CLV drives would be around 3.5-4x (in order to also meet BD-ROM Movie requirements). Nothing has actually been specified about the type of drive which will be used in the PS3, but you can be sure that Sony are quite aware of the seek time problems associated with CLV. Consoles are not designed only on the principle of keeping costs down, they also have to conform to requirements specifications for performance, noise, and thermal characteristics.

Sony should be aware of what performance they would need to provide acceptable gaming on BD-ROM media. The actual statement that CLV is not enough for gaming is somewhat bunk since we don't yet know what kind of seek times we'll expect (and that Blu-Ray offers great flexibility in terms of redundant data to help reduce seeks).

This does somewhat ignore the fact that most first gen PS3 games won't need the space, and no multiplatform titles are likely to ever need the space. And it also ignores the fact games are often designed by addressing design considerations like seek time and drive speed. A game well optimised for seek times will not suffer nearly as much as one which put little effort into addressing the issue.

Finally, it is often brought up that Sony cannot 'afford' to use a 4x drive in the PS3. This I find to be a fallacy, since there are no mass produced slower drives available as the 'cheaper' option (and yes I accept that it will cost more for higher speeds it is how much that is the issue). The drive speed will likely be a compromise on price and performance rather than solely one of them.
 
for some reason I doubt that's true...

Anyway I expect a 4x drive, which with added redundancy and more data at disc's edge will provide substantially faster loadtimes than rev./x360
 
Hardknock said:
Mark my words. The majority of PS3 games will not use Blu-Ray.
Please do explain more as I fail to see and understand this reason.

BTW, PS2's CD v DVD all over again. ;)
 
zidane1strife said:
for some reason I doubt that's true...

Anyway I expect a 4x drive, which with added redundancy and more data at disc's edge will provide substantially faster loadtimes than rev./x360

Well if that's the case (and it may very well be). What is the point of putting games on Blu-Ray if they aren't going to take advantage of the space? Using the space to add more redundancy and only using the outer edge? Plus the added cost of the medium? Might as well just put the game on a DVD don't you think?
 
Hardknock said:
Well if that's the case (and it may very well be). What is the point of putting games on Blu-Ray if they aren't going to take advantage of the space? Using the space to add more redundancy and only using the outer edge? Plus the added cost of the medium? Might as well just put the game on a DVD don't you think?

It is more than likely that Sony will subsidise the use of BD-ROM media, at least initially. They will be the primary manufacturers of the discs so all orders will go through them anyway. If their intentions are to promote Blu-Ray as a viable gaming medium then they will ensure that cost is not a limiting factor. All your other points are fine though, I can think that probably only multiplatform movie license games will be on BD-ROM's unless development shifts to the PS3 as the primary SKU.

After all, you have to understand that the reason the vast majority of multiplatform games weighed in under 4GB this gen was because the PS2 was the primary development platform and developers had to fight the design considerations which were put into the machine. Layer transitions were basically a limiting factor, and were out of the question for almost all game genres (why talk of dual layer San Andreas never produced any results). Game scope and content gets designed around this limitation which is why ports are often smaller say for the xbox, because of better compression techniques and less need for redundancy.

If the Xbox was the primary SKU for last gen, then this would have proved very problematic for the PS2 (such was seen for games like Psychonauts and a couple of games which had the GCN as a primary platform).

This will be exactly the same kind of issue for next gen. So while the 360 remains the primary development platform, I expect all multiplatform games to remain DVD sized. There will of course be exceptions to this rule but game engine and content will be built around the capacity limitations with the 360 provides. A shift over to the PS3 and thats where these games start getting build around the principle of 25GB storage capacity.
 
Mark 'Ol Pozer's words.......

PS3 BR game media usage chart
2006 - 90-95% non BR based games
2007 - 60-70% non BR
2008 - 30-40% non BR
2009 - 20-30% non BR
 
Mmmkay said:
This will be exactly the same kind of issue for next gen. So while the 360 remains the primary development platform, I expect all multiplatform games to remain DVD sized.

Nope.

The primary platform for console developers is the PS3.

360 ports of PS3 games will have music and video downsampled or dropped from the game. And if that isn't enough other game content will be downgraded or dropped. And if that isn't enough the 360 just won't get the game.

Exactly the same way it worked for PS2 -> GC titles.
 
Mmmkay, thank you for your quick reply, but can you please make an educated guess on this question, even though you're unsure:

What are the chances of PlayStation 3 being the primary console for the next generation?

What are the chances of PlayStation 3 being equipped with a 4x BD-ROM drive?

What are the chances CAV will be used in the BD-ROM instead of Z-CLV? Is it possible to have both?

Thanks.
 
SubD said:
Nope.

The primary platform for console developers is the PS3.

360 ports of PS3 games will have music and video downsampled or dropped from the game. And if that isn't enough other game content will be downgraded or dropped. And if that isn't enough the 360 just won't get the game.

Exactly the same way it worked for PS2 -> GC titles.

How are you so sure that the primary console is going to be the PlayStation 3? Wouldn't you think XBOX 360 would be the primary since most developers have already started production of their games on that console?

How is the content going to be 'downgraded' or 'dropped'? I'm not quite understanding.
 
dodo3 said:
How is the content going to be 'downgraded' or 'dropped'? I'm not quite understanding.

To save space, he contends that audio will be down-sampled, video will be downgraded or sacked altogether, features and extras such as "the making of", multiplayer, and the biggest storage whore of all, interactive gameplay, maybe cut completely, leaving you with this:

stick_man.jpg


;)
 
Last edited by a moderator:
dodo3 said:
Mmmkay, thank you for your quick reply, but can you please make an educated guess on this question, even though you're unsure:

What are the chances of PlayStation 3 being the primary console for the next generation?

What are the chances of PlayStation 3 being equipped with a 4x BD-ROM drive?

What are the chances CAV will be used in the BD-ROM instead of Z-CLV? Is it possible to have both?

Thanks.

Oh jeez, well I'm a nobody so my opinion doesn't hold much weight. But I'd say that for at least the next 2 years the 360 will remain the lead platform (for the majority!! of multiplatform games). There may be a point where there are joint development plans, when PS3 development tools mature enough and market share becomes more evenly split. After that, it may just become developer preference, it really depends on how well the PS3 sells. I know that just as some developers are keen to work closely with the technology innovations the Rev promises, there will be a similar keenness towards expanding on the possibilities for the extra space Blu-Ray offers. There are so many things that could happen over the next 2 years before everything becomes clear and we still know very little about the Revolution and its place.

4x CAV? Hm that is the top of the realistic wish list in terms of drive performance. I'm optimistic but realistically I don't think they'd have it ready in time. 3x Z-CLV is my shot in the dark guess. It is a compromise between both technologies and improves on the poor seek times which CLV offers. But to be honest, they could surprise us with anything, it's such a grey area because the PS3 will feature the first large volume mass produced BD-ROM drive.

Oh and I really don't agree with what SubD said. While there will be some games which Sony have secured primary development work for, the majority currently in development (and entering in the near future) should realistically be based around the 360. It has the installed base, and more mature development environment.

P.S. I love you ImaginaryIndustryInsider
 
ImaginaryIndustryInsider said:
To save space, he contends that audio will be down-sampled, video will be downgraded or sacked altogether, features and extras such as "the making of", multiplayer, and the biggest storage whore of all, interactive gameplay, maybe cut completely, leaving you with this:

stick_man.jpg


;)

LMAO! Thanks for the info. :)
 
Hardknock said:
Mark my words. The majority of PS3 games will not use Blu-Ray.

Look at PS2. A lot of games in the beginning were just CD-sized, but were still released on DVD because of piracy issues.

... "A lot" ;)
 
TRega123 said:
Both the sega CD and the PSP had CLV drives, and they have both demonstrated poor loading times.
...And marmots are doing the chocolate wrapping in swiss alps, where all the cows are purple.

is this really case with Blu-ray Drives and do you think games for the PlayStation 3 won't use Blu-ray Discs?
What early games use will mostly be determined by manufacture costs - many 1st gen PS2 games shipped on CD because it was cheaper to do so.
At any rate, the only "near BluRay" tech that Sony has demonstrated so far (the professional drive) works in both CAV and CLV modes, and can actually switch between them automatically.

Besides, even at 4x speed BRD, the transfer speeds relative to memory size will still be Slower then they are with PS2/XBox, making the relative effect of seek times smaller as well.
 
Content is cheap.

For the vast majority of games, it is dwarfed by salary in the budget. Once you are past the limits of a DVD there is little reason not to add value to your game by cranking out more content or licensing more music to fill up the rest of the BluRay disc.
 
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