Lenovo ThinkStation S20 - Manual (Page 58)

Table 2. DIMM type and speed: PC3-8500U
DIMM size (capacity)
Number of DIMMs
installed per CPU bank
Microprocessor model Memory frequency
Intel Xeon E5502, E5503,
E5504, E5506, E5507
800 MHz
1 GB, 2 GB, 4 GB 1 to 6
Intel Xeon E5520, E5530,
E5540, E5620, E5603,
E5606, E5607, E5630,
E5640, E5645, E5647,
E5649, X5550, X5560,
X5570, X5650, X5660,
X5667, X5670, X5672,
X5675, X5677, X5680,
X5687, X5690, W3503,
W3505, W3520, W3530,
W3540, W3550, W3565,
W3570, W3580, W3670,
W3680, W3690, W5580,
W5590
1066 MHz
52 ThinkStation Hardware Installation and Replacement Guide