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RME User Forum → HDSP(e) series → RME HDSPe RayDAT PCI Express Card Question
Is the RME HDSPe RayDAT PCI Express Card basically like a Digiface USB but in Pcie format?
Thanks.
It is somehow the equivalent (4 Adat I/O), but there are different features :
Digiface is 66 channel interface, RayDat is 72 channel interface
Digiface has an analog headphone output, RayDAT not
RayDAT has Midi I/O, Digiface not
RayDAT has AES I/O, Digiface not
It is somehow the equivalent (4 Adat I/O), but there are different features :
Digiface is 66 channel interface, RayDat is 72 channel interface
Digiface has an analog headphone output, RayDAT not
RayDAT has Midi I/O, Digiface not
RayDAT has AES I/O, Digiface not
Thanks for the clarity on specs….Im guessing latency is lower over PCIE too…but not massive…?
RayDAT may be also expanded to have World Clock and Timecode. Digiface none of those two.
Also Digiface USB does not have effects. I am not sure if RayDAT has effects or not.
Is the RME HDSPe RayDAT PCI Express Card basically like a Digiface USB but in Pcie format?
Thanks.
No, these are completely different products with different drivers and different feature set.
Regarding FX, which has been mentioned above: No PCI/PCIe card has a DSP chip to support FX. There is only one exception, the HDSPe MADI FX with FX, where newer models with updated DSP also support RoomEQ and Crossfeed. RayDAT and Digiface USB have no DSP and do not support RoomEQ, Crossfeed as well.
As the RayDAT is a fully digital card, the RTL (Round Trip Latency; AD + transport to/from + PC/DAW .. DA) depends on the converter that you connect to this card. As you can see here, all RME drivers are reliable and have a low latency; there won't be much difference: https://www.tonstudio-forum.de/blog/ent … cts-en-de/
Complete list of features for both interfaces:
RayDAT:
Fully digital card
HDSPe driver, smallest ASIO buffer size: 32 samples, driver supports pitch
36 Inputs + 36 Outputs
4 x ADAT I/O (optical SPDIF only ADAT4)
1 x AES/EBU I/O
1 x SPDIF I/O
2 x MIDI I/O
TotalMix FX
optional: Expansion Board WCM
optional: Time Code Option (TCO)
optional: Expansion Board TEB
Digiface USB:
USB bus powered, no PSU
MADIface driver, smallest ASIO buffer size: 32 samples, driver doesn't support pitch
32 Inputs, 34 Outputs
4 x ADAT Inputs and outputs (all switchable to optical SPDIF)
1 x Phones
TotalMix FX
Great info cheers.
Would a HDSPe RayDAT mean less stress on the CPU at lower latency over a USB Digiface?
Great info cheers.
Would a HDSPe RayDAT mean less stress on the CPU at lower latency over a USB Digiface?
CPU utilization does not differ recognizably/significantly between different drivers.
I would choose the RayDAT because it gives you more flexibility as a solid base for a recording setup.
Things like MIDI, AES, etc., and the possibility to get the optional work clock card.
This is all not possible with the Digiface USB.
Also, the AES port might become useful for connecting a reference converter, and then you still have the four ADAT ports free for mic preamp(s) and/or ADDA converter(s). It would also make it easier in terms of operation at double speed.
Word clock might be needed if you connect mic preamps that have no digital inputs. If you connect one, then you can make it to the clock master, but if you connect two of those, then clock synch is only possible when using Word Clock.
easyrider wrote:Great info cheers.
Would a HDSPe RayDAT mean less stress on the CPU at lower latency over a USB Digiface?
CPU utilization does not differ recognizably/significantly between different drivers.
I would choose the RayDAT because it gives you more flexibility as a solid base for a recording setup.
Things like MIDI, AES, etc., and the possibility to get the optional work clock card.This is all not possible with the Digiface USB.
Also, the AES port might become useful for connecting a reference converter, and then you still have the four ADAT ports free for mic preamp(s) and/or ADDA converter(s). It would also make it easier in terms of operation at double speed.
Word clock might be needed if you connect mic preamps that have no digital inputs. If you connect one, then you can make it to the clock master, but if you connect two of those, then clock synch is only possible when using Word Clock.
Great cheers
What do you mean by “ It would also make it easier in terms of operation at double speed.”
Assume you want to deploy one of the reference converters with an AES port.
If you can use AES to connect it, then you still have 4 ADAT ports for, e.g., connecting a 16-port converter at double speed.
Such an additional AES port can be very practical for such purposes, also on a UCX II or other interfaces.
Assume you want to deploy one of the reference converters with an AES port.
If you can use AES to connect it, then you still have 4 ADAT ports for, e.g., connecting a 16-port converter at double speed.Such an additional AES port can be very practical for such purposes, also on a UCX II or other interfaces.
Thanks 
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