dazu gibt es einige threads in music-forum communities
es gibt da einige Leute die Probleme mit anderen chipsets haben.
hab leider im moment nur diese links hier (leider alles in englisch):
http://forum.notebookreview.com/showthread.php?t=135420
http://www.kvraudio.com/forum/viewtopic.php?t=183594
http://www.kvraudio.com/forum/viewtopic.php?t=183118&highlight=
hier ein Zitat von einem Systembuilder von ADK ( http://www.adkproaudio.com ), der spezielle music-PCs und laptops baut:
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Issues with the majority of new laptops.
Not all laptops are created equal. While they may appear to have the same specs, (processor, memory, harddrive) the performance for Pro audio is drastically different.
Most name brand laptops will NOT work for Pro audio as they are plagued with resource allocation issues, IRQ conflicts and poor bios'.
Contrary to popular belief no one makes their own laptops. In Other words Dell is made by someone as is Apple, Gateway etc.
There are 9 or so ODM's (manufacturer's of laptops) in the world.
Clevo, Compal, Mitac, Asus, MSI, Twinhead, Uniwill/ECS, Arima, Movita.
While this has to do with both Intel and AMD I will confine this to Intel as AMD Laptops are underpowered.
Intel Core 2 Duo, and upcoming Santa Rosa (core 2 duo with 800 fsb)
1) Chipsets: the main chipset is the Intel 945 PM/GM (gm means onboard video) And this is not the issue. The Chipset issue is what is being used for the Cardbus(if it actually still has one), Memory card reader, modem, network, Firewire. or what's called combo chipsets. (all in 1) also note that an Express slot replaces the cardbus and while its a differnet connection it still requires a chipset and is seen as a carbus slot.
Ricoh: (asus and others) a lot of incompatibility with audio interfaces and general poor performance.
ENE: (compal and others) same as above, the Cardbus is horrid. Usually with Via firewire. The via firewire does better than ricoh.
Realtek: now found on several laptops, not just as audio, but audio, card reader, Cardbus, modem, Firewire.
Texas Instruments: firewire and Express/Cardbus (again cardbus is gone from most new laptops). The chipset to have!
2) Bios: most laptops are 512k some are 1 meg, where a desktop will have 4meg- 8meg.
This is probably the biggest issue. The Bios for the most part is responsible for IRQ and resource allocation. A small and poorly written bios is what causes so many things To be lumped on to 1 IRQ.
ACPI handles this.
Microsoft developer site
with laptops you have "hot swap" devices (cardbus, Express slot and more) this adds to the issue. Understanding that resource allocation is memory based (name space and virtual memory), A small bios has a hard time allocating space for all potential product IDs.
Add to that we now have PCIe even more bios issues arise.
More from MS.
"Insufficient bridge resources appear when the platform BIOS cannot assign appropriate PCI-bridge resource windows during POST. Systems supporting hot-plug PCI devices are particularly problematic. When a PCI device can be hot-plugged behind a PCI bridge at run time, it is impossible for the BIOS to ascertain during POST how large a bridge resource window must be to accommodate a device. Additionally, a PCI bridge device might be hot plugged in certain situations—for example, in generic docking solutions that connect through CardBus adapters"
"""The previous scenarios are exacerbated with the emergence of PCI Express. PCI Express defines many bridge devices that are used to represent ports, thereby making complex bridge hierarchies more prevalent. Additionally, PCI Express hot-plug will be widely used in desktop and workstation client systems, so hot-plug scenarios will not be limited to large servers.
"" So small bios means less ability to handle ACPI steering and resources in "virtual space"
3) Expectation of ODM: most laptops are NOT designed to be used as workstations. The vendors never expected this. Laptops are designed to be light weight, long battery life used mostly by biz people on the go, or typical home user surfing the net, playing music. Therefore they program the bios in a careless manor.
Here is more about how its left to the individual ODM to program the bios.
"""The rules for the above programmable ranges are:
1. ALL of these ranges MUST be unique and NON-OVERLAPPING. It is the BIOS or system designers responsibility to limit memory population so that adequate PCI, PCI Express, High BIOS, PCI Express Memory Mapped space, and APIC memory space can be allocated.
2. In the case of overlapping ranges with memory, the memory decode will be given priority.
3. There are no Hardware Interlocks to prevent problems in the case of overlapping ranges.
4. Accesses to overlapped ranges may produce indeterminate results.
5. The only peer-to-peer cycles allowed below the top of memory (register TOLUD) are DMI to PCI Express VGA range writes. Note that peer to peer cycles to the Internal Graphics VGA range are not supported."""
Taken from Intels white papers Here
A few manufacturers put more thought into it. Again the more expensive TI chipset is a good indication that there was consideration for use as a workstation. The bios will be a bit more open and better programming as well as usually larger. The more different chipsets there are internally the more likely they will have their own resources, as opposed to everything in 1 chipset. So that about covers the less obvious (HDD, ram etc)
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