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Two green DDR3 DIMMs with silver heat spreaders

Mushkin Enhanced

Mushkin Enhanced MAR3E1339T4GX2 8GB (2 x 4GB) DDR3 1333 memory upgrade

SKU CH-M1F8-EKM6B MPN MAR3E1339T4GX2

8GB DDR3 1333 kit with two 4GB ECC unbuffered modules built for Apple desktops

  • Total capacity8 GB (2 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • CAS latency9
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Product type240-Pin DDR3 SDRAM
  • 8 GB dual-channel kit boosts Mac responsiveness
  • 1333 MHz DDR3 speed matches PC3 10600 spec
  • CAS 9 latency tightens data access timing
  • 5 V operation keeps power draw efficient
  • ECC unbuffered design adds error correction for stability

Mac-specific DDR3 upgrade

This 8 GB kit contains two 4 GB unbuffered ECC DIMMs built for Apple desktops that require 240-pin DDR3 1333 memory. It targets users who need a straightforward capacity increase on compatible Mac systems without mixing modules.

Install by seating both DIMMs

Installation follows the standard 240-pin DDR3 procedure: power down, open the case, align the notch, and press until the latches click. The main risk is using a single module or mixing speeds, which can prevent the Mac from booting or force it to run at a lower rate.

Limited to DDR3 1333 bandwidth

The PC3 10600 interface caps throughput at the DDR3 1333 data rate, so the kit cannot deliver the higher bandwidth of later DDR generations. Systems that demand faster memory or non-ECC modules will not benefit from this upgrade.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $33.99
Cheaper than about 83% of the 21,161 comparable items (median $397.99).
Total capacity 8 GB (2 × 4 GB)
Lower than about 80% of the 20,941 comparable items (median 32 GB).
CAS latency 9
Lower than about 92% of the 483 comparable items (median 22).
Price per GB $4.25 per GB
Cheaper than about 83% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameMushkin Enhanced
Product lineiRam
Model nameMAR3E1339T4GX2
Total capacity8 GB (2 × 4 GB)
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1333 (PC3 10600)
Memory
CAS latency9
ECC supportYes
Buffer typeUnbuffered
Power
Rated voltage1.5 V
Size & build
Shipping weight0.05 kg
Package size180 × 135 × 10 mm
Compatibility
Compatible withFor Apple Desktop

Questions about this item

How do I confirm the memory is running at DDR3 1333 with CAS latency 9 after installation?

Open System Information or a hardware monitor and verify the reported speed shows 1333 MT/s (PC3 10600) and the timings read CL9 at 1.5 V.

What is included in the box and what must I source separately?

The kit contains two 4 GB 240-pin DDR3 ECC unbuffered modules; no tools, cables or additional parts are supplied.

Which capacity version should I choose for a Mac that supports 8 GB of DDR3 1333 ECC memory?

This MAR3E1339T4GX2 kit provides the full 8 GB (2 × 4 GB) in a matched pair, which is the exact capacity and configuration specified for compatible Apple desktops.

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