[News] Marvell announces Discovery III Northbridge | ANN.lu |
Posted on 30-Sep-2003 15:01 GMT by takemehomegrandma | 94 comments View flat View list |
Marvell today announced the Discovery III northbridge. It features a 200MHz PowerPC CPU interface, 200MHz DDR SDRAM Interface (400Mbps data rate), Dual CPU SMP Support (MPX and 60x modes), PCI-X, Gigabit ethernet and is software compatible with other Discovery northbridges.
Source: morphos-news.de
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Marvell announces Discovery III Northbridge : Comment 62 of 94 | ANN.lu |
Posted by minator on 01-Oct-2003 09:07 GMT | In reply to Comment 61 (Eva): Eva wrote:
>Point out that "DIscovery DDR support is useless" is simply not true.
>Both the machine speed and the user benefits are rewarded by DDR support.
>In these dayz Singapore dealers Sdram price are higher than DDR 333 one! And it's
>also difficult to find Sdram around. So also the simple fact that we can INSTALL
>DDR-ram is a step foward.
It more than that, I fully expect memory speeds to go up.
The DDR bus means the read from memory takes less time and can get buffered in the core of the North Bridge. So, if the CPU is reading a big chunk from memory the second and subsequent read should come from the buffer and this will reduce the access latency.
Memory access is quite a bit below it's theoretical values but this will give the CPU a nice boost in memory speed even if it is using the same speed CPU-NorthBridge bus.
This also applies to PCs, think your PC 2700 memory is actually reading at 2.7GBytes a second, think again, it's not even reading at the theoretical maximum of PC133 SDRAM. |
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