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Compare HyperX Impact Black 4GB DDR3 1600MHz vs Impact Black 8GB DDR3 2133MHz

The main differences between HyperX Impact Black 4GB DDR3 1600MHz and HyperX Impact Black 8GB DDR3 2133MHz are in Speed, Size, CAS Latency and First Word Latency.
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Brand
HyperX
Brand
HyperX
Model
HX316LS9IB/4
Model
HX321LS11IB2/8
Release Date
-
Release Date
-
* First availability for purchase, it may not correspond to the actual market launch date.
User reviews
User reviews
Price history
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Price history
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Price/GB
$4.90
Price/GB
-
GB/$1
0.2
GB/$1
-
Samsung B-Die
No
Samsung B-Die
No
Compatible PC parts
Compatible PC parts
Type
204-pin DDR3 SODIMM
Type
204-pin DDR3 SODIMM
Speed
DDR3-1600 MHz
Speed
DDR3-2133 MHz
Size
4GB (1 x 4GB)
Size
8GB (1 x 8GB)
CAS Latency
9
CAS Latency
11
Timing
-
Timing
11-12-13
First Word Latency
11.25 ns
First Word Latency
10.31 ns
Voltage
1.35 V
Voltage
1.5 V
Heat Spreader
No
Heat Spreader
Yes
ECC Support
No
ECC Support
No

Comparison and key differences summary

Reasons to buy the HyperX Impact Black 4GB DDR3 1600MHz:

  • Less voltage required (-0.15 V needed)
  • Less CAS latency (-2)

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Reasons to buy the HyperX Impact Black 8GB DDR3 2133MHz:

  • Better first word latency (-0.94 ns)
  • Higher speed frequency (+533 MHz)
  • More Capacity (+4 GB available)

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