The cover plate with the Micron logo and branding is not user-removable. The cover is applied with adhesive backing that will likely strip the 48 Tantalum capacitors from the PCB upon removal. The center of the faceplate, which covers the heatsink, also has a thermal pad for conducting heat to the cover of the P420m, in essence creating a large metal heatsink with the cover.
The Tantalum capacitors provide enough capacitance to flush data in-flight down to the NAND in the event of a power loss. We note the spare pads for the possible inclusion of more capacitors, perhaps signaling a higher capacity version of the card in the future.
Looking at the P420m from the edge reveals a triple-stacked PCB architecture. The heat sink isn't exposed to an abundance of air down among the PCBs, perhaps explaining the thermal pad scheme on the cover. We closely monitored the temperature under heavy loads and the P420m remained within expectations.
Ten very thin copper strands connect the top PCB with its capacitors to the bottom PCB, which holds the controller.
Upon removal, we flip over the top PCB, which holds the capacitors, and not the traces that route the capacitors to the 10-pin connector.
Both pictures above detail the middle PCB, which holds the lion's share of the NAND. The 25nm Micron MLC NAND packages total 36 for this component. Each package contains 32GB of NAND, with eight die per BGA package. The 700GB P420m has the same number of overall NAND packages, but contains only four die per package.
The bottom PCB contains the Micron/IDT ASIC, a 32-channel beast that provides native PCIe to the 2.0 x8 connection. The remainders of the NAND packages reside on this PCB, along with several DRAM packages hidden under the secondary heat sink.
Finally, the bottom of the main PCB holds the remainder of the ECC DRAM, for a total of 2.25GB. The use of ECC RAM allows for the detection and correction of any areas in the cache. We also note the remaining NAND packages crammed into the scant space available on the PCB.
PRICING: You can find products similar to this one for sale below.
United States: Find other tech and computer products like this over at Amazon's website.
United Kingdom: Find other tech and computer products like this over at Amazon UK's website.
Canada: Find other tech and computer products like this over at Amazon Canada's website.
Recommended for You
- We at TweakTown openly invite the companies who provide us with review samples / who are mentioned or discussed to express their opinion of our content. If any company representative wishes to respond, we will publish the response here.
Latest News Posts
- SK Hynix announces GDDR6, offers up to 14Gbps of bandwidth
- Nintendo shows off most downloaded eShop games
- Battlefield 1: Apocalypse DLC details aerial dogfights
- Nintendo Switch sells 1.5 million units last month
- Epic Games doubts the success of their own MOBA Paragon
- SuperData Analyst Interview on Call of Duty: WWII Success
- GIGABYTE Z370XP SLI (Intel Z370) Motherboard Review
- The GIGABYTE Z370N WIFI (Intel Z370) Motherboard Review
- noblechairs ICON Series Real Leather Gaming Chair Review
- GIGABYTE X299 Designare EX (Intel X299) Motherboard Review
- Toshiba Memory America Unveils UFS Devices Utilizing 64-Layer, 3D Flash Memory
- ASUS Announces GeForce GTX 1070 Ti Series Gaming Graphics Cards
- ASUS Announces ASUS Hangouts Meet Hardware Kit
- Colorful Announces iGame GeForce GTX 1070 Ti Vulcan X Top
- Gainward Announces its GeForce GTX 1070 Ti Series