tested a few USB2.0 pci cards,
none can match the speed of included USB2.0 in Asus P5W DH Deluxe motherboard, so far.
the best ive tested was the NEC smaller chip,
and closer the PCI slot to the CPU gives better USB2.0 performance,
Asus P5W DH Deluxe with intel 975X & ich7r has 34MB/s to 35MB/s Read, measured in HDTach3.0.4
NEC D70****F1/GD chip has 22MB/s
ALi M5271 has 18MB/s
Via 5, didnt worked in my old PC
The MB/s read transfer affects the MIDI latency,
the best i could get was 278samples of latency with the NEC chip.
44100 samples - 1000milliseconds.
x samples - y ms.
RME HDSP9632 61-68samples = >1.38322 ms. in Cubase loop test.
also found two nice web sites:
Download MidiTest v4.6.231: MidiTest Results: MidiTest others: 8 Port SE Drivers Solving Directmusic problems in SX/Nuendo
old pc, compaq 4700 p4 1.6ghz
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MidiTest Results: RME HDSP9632 pci
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DirectMusic with TimeStamp active:
Message latency: 0.86 ms
Message jitter: 0.22 ms
Message max deviation: 0.51 ms
same DirectMusic Test #2:
Message latency: 0.57 ms
Message jitter: 0.27 ms
Message max deviation: 0.65 ms
Emulated:
Message latency: 6.01 ms
Message jitter: 0.26 ms
Message max deviation: 0.53 ms
MME:
Message latency: 0.58 ms
Message jitter: 2.77 ms
Message max deviation: 253.67 ms
Kernel Steaming:
Message latency: 0.90 ms
Message jitter: 0.99 ms
Message max deviation: 40.64 ms
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MidiTest Results: Novation ReMOTE 61 SL with NEC USB2.0 chip - Standard USB Modem Cable - far/last pci slot from CPU
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Emulated: test #1
Message latency: 10.37 ms
Message jitter: 0.49 ms
Message max deviation: 1.07 ms
Emulated: test #2 in Play mode.
Message latency: 6.67 ms
Message jitter: 0.42 ms
Message max deviation: 1.32 ms
MME:
Message latency: 4.91 ms
Message jitter: 1.22 ms
Message max deviation: 6.11 ms