Burned at 8x with LDW-451S@SOHW-832S, VS08, 4.38 GB movie:

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Unique Disc Identifier : [DVD+R:PHILIPS-C08-000]
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Disc Type : [DVD+R]
Manufacturer ID : [PHILIPS]
Manufacturer Name : [Philips]
Media Type ID : [C08]
Product Revision : [Not Specified]
Disc Application Code : [General Purpose]
Recording Speeds : [1x , 2.4x , 4x , 6x-8x]
Blank Disc Capacity : [2,295,104 Sectors = 4,482.6MB = 4.38GB (4.70GB)]
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[DVD Identifier - http://DVD.Identifier.CDfreaks.com]
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Mediacode:

0000 : a1 0f 02 00 00 03 00 00 00 26 05 3f 00 00 00 00 .........&.?....
0010 : 00 00 03 50 48 49 4c 49 50 53 00 43 30 38 00 38 ...PHILIPS.C08.8
0020 : 23 54 37 10 02 38 6a 02 88 67 15 15 0b 0b 08 08 #T7..8j..g......
0030 : 01 19 1b 0c 0c 0c 0d 01 00 00 00 00 00 00 00 00 ................
0040 : 01 00 38 38 02 27 61 16 08 2e 23 10 04 1e 1d 01 ..88.'a...#.....
0050 : 00 00 02 27 61 16 08 2e 23 10 04 1e 1d 01 00 00 ...'a...#.......
0060 : 02 00 54 70 02 38 5f 56 20 14 0b 0b 01 18 00 00 ..Tp.8_V .......
0070 : 00 00 02 3d 5d 7a 20 14 0c 0a 01 18 00 00 00 10 ...=]z .........

BenQ DW1650 BCHC, 4482 MB burned to disc.

Maxell DVD+R 16X (made in Taiwan)
PHILIPC16
Mirror Band: CPDR47G-PFMWPOE-003 0106
Inner Hub Serial: PFP686II14124057 3

Solidburn off
WOPC on

Transfer rate tests in DW1640 and DW1650 are fine

In case you're wondering why CD Speed says it was burned in the DW1640, it a bug. It was infact burned in the DW1650 and I have the screenshot to prove it