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OCZ Blade ST 2000MHz Low Voltage DDR3 Memory E-mail
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Written by Steven Iglesias-Hearst   
Friday, 12 November 2010
Table of Contents: Page Index
OCZ Blade ST 2000MHz Low Voltage DDR3 Memory
OCZ Blade ST Specifications
Closer Look: OCZ Blade ST Memory
SPD and Overclocking Results
RAM Testing and Results
Benchmark Test Results
Application Test Results
Final Thoughts and Conclusion

Benchmark Test Results

Benchmark Reviews runs each tests at least 3 times to avoid special situations where scores are over or under exposed. Passmark Performance Memory Test benchmarks the memory and reports a test score. I´ve chose Memory Mark along with uncached read and write speed since they´re the most important benchmarks for memory testing on this suite.


The memory scales as we would expect in the synthetic Passmark Performance tests, that is until we get to our overclocked settings. Maybe we have an anomaly here or maybe the CPU factor has an influence on the results, either way we will see as we look at other tests. Performance gains at the higher speeds are minimal thanks to the tighter timings at the lower speeds.

AIDA 64 Edition offers three simple memory bandwidth tests that focus on the basics; Read, Write, and Copy. In order to avoid concurrent threads competing over system memory bandwidth, the Memory benchmarks utilize only one processor core and one thread.


Once again scaling is as expected in a synthetic benchmark, AIDA 64 Extreme rewards higher scores based more on speed than timings in these tests. Our overclocked settings only take a hit on copy speeds this time round. A meagre 1.65% performance increase in read speeds and 1.90% increase in write speeds are achieved with our overclocked settings.

Sandra is based on STREAM, a popular memory bandwidth benchmark that has been used on personal computers to super computers. It measures sustained memory bandwidth not burst or peak. Therefore, the results may be lower than those of other benchmarks. STREAM 2.0 uses static data (about 12M) - Sandra uses dynamic data (around 40-60% of physical system RAM). This means that on computers with fast memory Sandra may yield lower results than STREAM. It's not feasible to make Sandra use static RAM - since Sandra is much more than a benchmark, thus it would needlessly use memory.

A major difference is that Sandra's algorithm is multi-threaded on SMP/SMT systems. This works by splitting the arrays and letting each thread work on its own bit. Sandra creates a thread for each CPU in the system and assigns each thread to an individual CPU. Another difference is the aggressive use of scheduling/overlapping of instructions in order to maximize memory throughput even on "slower" processors. The loops should always be memory bound rather than CPU bound on all modern processors.


In the Sandra test suite we get the same story with a happier ending, scaling is in line with speed rather than timings. We have a 4.16% performance increase in the Int Buffered test and we have a 3.88% increase in the Float buffered test with our overclocked speeds.

In the next section we will focus on real world applications to see if the results gained will match those of the synthetic benchmarks.



# RE: OCZ Blade ST 2000MHz Low Voltage DDR3 MemoryDoug 2010-11-12 00:01
I know you can resize browser text, but why create web pages with 3px font in the first place?
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# RE: RE: OCZ Blade ST 2000MHz Low Voltage DDR3 MemorySteven Iglesias-Hearst 2010-11-12 00:20
The text is much smaller than it is supposed to be, let us look into it and it shall be repaired.
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# RE: RE: RE: OCZ Blade ST 2000MHz Low Voltage DDR3 MemoryOlin Coles 2010-11-12 08:04
I've removed the formatting, and it should be fixed now. Time for a discussion on pasting from Word...
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# Low VoltageServando Silva 2010-11-12 07:54
It's funny how OCZ still thiks low voltage is 1.65v when there are 1.2-1,3v kits nowadays and 1.65v is the standard.
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# RE: Low VoltageAdam 2010-11-12 10:45
Oddly enough OCZ do make proper low voltage kits as well, 1.35v.
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# Not at this speedBruceBruce 2010-11-12 11:02
I only see a couple of choices at Newegg that are lower voltage AND are running 2000MHz. None of them are below 1.55V. Higher speed generally requires higher voltage, at the same technology node.
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# RE: Not at this speedServando Silva 2010-11-12 11:59
Sure, but for 1.65v there are 2400-2600MHz kits, and there's no need to name them as "low-voltage" kits because they're for "extreme" enthusiasts.
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