Each stick of
Corsair DOMINATOR Twin2X2048-9136C5D memory is cooled by four separate aluminum
heatspreaders; two large external black ones and two smaller silver internal
large black heatsinks come in direct contact with all 16 DDR2 BGA memory
modules, and pull heat away from the memory in the conventional heatspreader
manner. The thin black aluminum heatsink extends up past the DIMM PCB with a
series of short fins. The aluminum is bonded to the DRAM with permanent
way BGA chips are designed, most of the heat generated by the IC actually
travels through the solder balls that bond the DRAM to the circuit board. A
percentage of the heat generated by a BGA chip travels out through the top, and
the remainder down through the solder balls into the PCB substrate.
Unfortunately, PCB is made of materials which are excellent
electrical and thermal insulators, so it is a
horrible heatsink compared to metal.
in mind, Corsair has redesigned the PCB for board level thermal management.
Basically, the copper trace lines act as thermal vias, conducting heat towards a
large metal pad at the top that two small silver aluminum heatsinks are attached
heatsinks draw the excess heat away from the PCB, and are cooled by system
airflow and convection. Essentially Corsair have designed the DOMINATOR memory
such that the entire DDR2 memory module is cooled, RAM and circuit board
stab at better memory cooling through careful design is a refreshing change from
what we're accustomed to. This solution is new for desktop memory modules, but
similar approaches have been used for cooling aircraft avionics for many many
years. In any event, the main point is that this method of cooling memory with
heatsinks does a much better job at keeping DDR2 memory cool than conventional
Furthermore, a separate fan system called the DOMINATOR
Airflow Fan can also be clipped on just above the memory modules for active
cooling of the small aluminum fins. The Dominator Fan contains three 40mm fans,
and draws power of any available molex connector. On the whole, Corsair's
Dominator Twin2X2048-9136C5D memory kit really ushers in a fresh new approach to
performance memory cooling.
EPP - Enhanced
Performance Profiles take over from where the Serial
Presence Detect (SPD) EEPROM that is on every stick of memory leaves off,
and adds extra information about how much faster the memory can run while
remaining completely stable.
information permits compatible motherboard chipsets and BIOS' to dynamically
adjust memory timings and voltages for improved overall performance without any
user interaction. If you're an expert overclocker EPP provides a jumping off
point, if you're a novice it does all the hard work for you
automatic motherboard overclocking already a hit in the retail market, Enhanced
Performance Profiles compatibility adds memory tuning to the performance mix. At
the moment EPP memory is only compatible with the nVIDIA nForce 590 and 680i SLI
chipsets, but VIA and Intel are expected to follow suit as the idea is being
proposed to JEDEC as an open standard. We expect all chipset manufacturers will
adopt EPP memory support in the BIOS for high end products.