24 GB Memory working in Studio XPS 435MT for $270

After trying 4 GiB DDR3 memory from G.Skill, Crucial and 2 sets of Black Diamond - and getting the dreaded "beep-beep" memory POST failure whenever I put more than 1 DIMM in a channel - I found memory that is recognized by the BIOS at the full 24 GiB.

I've been running with it for two weeks without a problem.  I've run memtest, and even have pushed it into heavy paging running some database tests in virtual machines.  (I have a fast OCZ Vertex 2 for pagefile.sys, so it can hard fault at an astonishing rate.)

Although this screen says 1333MHz, the OS and other tools say 1066MHz.

The DIMMs are Kingston KHX1600C9D3X2K2/8GX

Normally $120 per pair at http://www.frys.com/product/6516823?site=sr:SEARCH:MAIN_RSLT_PG, but on sale in the Fry's stores for $89.99 per pair.  (Note that the page says that they are 1.65v, but that's for 1600 MHz.  The default is 1.5v at 1333MHz - look at the CPU-Z info below.)

CPU-Z info:

CPU-Z version   1.56

Chipset
-------------------------------------------------------------------------

Northbridge   Intel X58 rev. 12
Southbridge   Intel 82801JR (ICH10R) rev. 00
Graphic Interface  PCI-Express
PCI-E Link Width  x16
PCI-E Max Link Width  x16
Memory Type   DDR3
Memory Size   24576 MBytes
Channels   Triple
Memory Frequency  532.0 MHz (2:8)
CAS# latency (CL)  7.0
RAS# to CAS# delay (tRCD) 7
RAS# Precharge (tRP)  7
Cycle Time (tRAS)  19
Row Refresh Cycle Time (tRFC) 86
Command Rate (CR)  2T
Uncore Frequency  2127.9 MHz

Memory SPD
-------------------------------------------------------------------------

DIMM #    1
 SMBus address  0x50
 Memory type  DDR3
 Module format  UDIMM
 Manufacturer (ID) Kingston (7F98000000000000)
 Size   4096 MBytes
 Max bandwidth  PC3-10700 (667 MHz)
 Part number  9905403-199.A00LF
 Serial number  6613A845
 Manufacturing date Week 06/Year 11
 Number of banks  8
 Nominal Voltage  1.50 Volts
 EPP   no
 XMP   yes
 XMP revision  1.2
JEDEC timings table  CL-tRCD-tRP-tRAS-tRC @ frequency
 JEDEC #1  6.0-6-6-17-23 @ 457 MHz
 JEDEC #2  7.0-7-7-20-27 @ 533 MHz
 JEDEC #3  8.0-8-8-22-30 @ 609 MHz
 JEDEC #4  9.0-9-9-25-34 @ 685 MHz
XMP profile   XMP-1600
 Specification  PC3-12800
 Voltage level  1.650 Volts
 Min Cycle time  1.250 ns (800 MHz)
 Min tRP   11.25 ns
 Min tRCD  11.25 ns
 Min tWR   15.00 ns
 Min tRAS  33.75 ns
 Min tRC   45.00 ns
 Min tRFC  160.00 ns
 Min tRTP  7.50 ns
 Min tRRD  6.00 ns
XMP timings table  CL-tRCD-tRP-tRAS-tRC-CR @ frequency (voltage)
 XMP #1   6.0-6-6-18-24-0T @ 533 MHz (1.650 Volts)
 XMP #2   7.0-7-7-21-28-0T @ 622 MHz (1.650 Volts)
 XMP #3   8.0-8-8-24-32-0T @ 711 MHz (1.650 Volts)
 XMP #4   9.0-9-9-27-36-0T @ 800 MHz (1.650 Volts)

DIMM #    2-6 same as 1

DIMM #    1
SPD registers 
  00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F
 00 92 10 0B 02 03 19 00 09 03 52 01 08 0C 00 3C 00
 10 69 78 69 30 69 11 20 89 00 05 3C 3C 00 F0 83 05
 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 30 00 00 00 00 00 00 00 00 00 00 00 00 0F 11 01 01
 40 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 50 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 60 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 70 00 00 00 00 00 01 98 04 11 06 66 13 A8 45 2A F0
 80 39 39 30 35 34 30 33 2D 31 39 39 2E 41 30 30 4C
 90 46 20 00 00 80 AD 00 00 00 00 00 00 00 00 00 00
 A0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 B0 0C 4A 01 12 01 08 00 00 00 2D 0A 5A 3C 00 50 5A
 C0 5A 78 11 0E 68 3F 00 00 05 3C 30 00 F0 3C 00 00
 D0 00 00 24 00 00 00 00 00 00 00 00 00 00 00 00 00
 E0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 F0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 5A

DIMM #    2-6 same as 1

DMI
-------------------------------------------------------------------------

DMI BIOS  
 vendor   Dell Inc.
 version   1.1.4
 date   12/21/2009

DMI System Information  
 manufacturer  Dell Inc.
 product   Studio XPS 435MT
 version   unknown

DMI Baseboard  
 vendor   Dell Inc.
 model   0R849J
 revision  A01

DMI System Enclosure  
 manufacturer  Dell Inc.
 chassis type  Desktop

DMI Processor  
 manufacturer  Intel
 model   Intel(R) Core(TM) i7 CPU         940  @ 2.93GHz
 clock speed  2933.0 MHz
 FSB speed  133.0 MHz
 multiplier  22.0x

DMI Memory Controller  
 correction  64-bit ECC
 Max module size  2048 MBytes

DMI Memory Module  
 designation  DIMM1

DMI Memory Module  
 designation  DIMM2

DMI Memory Module  
 designation  DIMM3

DMI Memory Module  
 designation  DIMM4

DMI Memory Module  
 designation  DIMM5

DMI Memory Module  
 designation  DIMM6

DMI Physical Memory Array  
 location  Motherboard
 usage   System Memory
 correction  None
 max capacity  12288 MBytes
 max# of devices  6

DMI Memory Device  
 designation  DIMM1
 format   DIMM
 type   unknown
 total width  64 bits
 data width  64 bits
 size   4096 MBytes

DMI Memory Device  
 designation  DIMM2
 format   DIMM
 type   unknown
 total width  64 bits
 data width  64 bits
 size   4096 MBytes

DMI Memory Device  
 designation  DIMM3
 format   DIMM
 type   unknown
 total width  64 bits
 data width  64 bits
 size   4096 MBytes

DMI Memory Device  
 designation  DIMM4
 format   DIMM
 type   unknown
 total width  64 bits
 data width  64 bits
 size   4096 MBytes

DMI Memory Device  
 designation  DIMM5
 format   DIMM
 type   unknown
 total width  64 bits
 data width  64 bits
 size   4096 MBytes

DMI Memory Device  
 designation  DIMM6
 format   DIMM
 type   unknown
 total width  64 bits
 data width  64 bits
 size   4096 MBytes