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disolitude on 02 July 2008
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makingmusic476 said:
disolitude said:
a12331 said:

Blu-ray:

1× at 36 Mbit/s

2× at 72 Mbit/s *this the one that ps3 uses
4× at 144 Mbit/s
6× at 216 Mbit/s[1]
12× at 432 Mbit/s

Xbox 360 are equipped with a 12x DVD drive, capable of a maximum read rate of 15.85 MB/s

source wikipedia.

show what you can see the ps3 is actually disk drive faster than the 360s by 4.5 times.

 

 

 

 

lol. I appreciate your effort in researching this but please notice the difference between MB and Mb. One stand for Mega Byte other is Mega Bit. 1 Mega Byte has 8 Mega Bits.

So according to your info there...

xbox dvd drive is 15.85MB x 8 = 126.8 Mbit

PS3 = 72 Mbit

And considering that most Xbox drives these days are 16X not 12X (it was 12X at launch)...taa daa... over 2X faster than PS3.

All 360's have the same drive speed for reading games. The 360's drive reads single layered DVDs at 12x speeds and dual layered DVDs at 8x speeds.

Blu-Ray drives, unlike traditional DVD drives, have a constant read speed.

The ps3's drive reads at a constant 9MB/s, while the 360's drive reads at a MAXIMUM of 10.57 MB/s. It reads at a minimum of 4.36MB/s.

The only reason the 360's drive could be perceived as superior is because developers can put necessary data on the outer edge of the disc, resulting in much faster read speeds for said data versus the ps3's drive.

http://forum.beyond3d.com/showthread.php?t=42157

And even if the DVD drives in the newer 360s had faster read speeds, developers would be unable to take advantage of it. If they were to alter their engines to cater to new 360s, people with older 360s would experience excessive loading, etc. Developers would have to take into account the lowest common denominator. If anything, the drive would provide an advantage when viewing DVD movies.

 

 

Interesting numbers. I obviously cant argue myself as I've never measured the data flow between 12X DVD and 2 X bluray. All I can do is provide info where I read the data.

According to this the 12X maximum read speed (outer edge) is 2X faster than bluray 2x. While the minimum read speed (inner edge) on a dvd is a bit less than 2X bluray.

http://www.maxconsole.net/content_img/dvdvsbr.gif.jpg

Here is the article.

http://www.maxconsole.net/?mode=news&newsid=6060

 

In any case...I think there are 3 reasons PS3 needs isntalls and xbox doesn't.

1. Memory on 360 is more flexible (512 shared vs 256 - 256)

2. DirectX (or XNA or hatever its called on the 360)...sony has nothing like DirectX in their ps3 that helps devs with game and video programming

3. bluray speed