CPU-Z / GPU-Z Report Interpreter
Read a CPU-Z report and spot the two numbers everyone misreads.
What you paste
Parsed in your browser — never uploadedHow this reads your output
The report is scanned for the processor and memory sections, and the values are presented with the context that makes them readable. Two figures get particular attention because they are misread constantly: the core speed, which is a single sample from an idle machine most of the time, and the memory frequency, which is half the number printed on the box because DDR transfers on both clock edges. Configuration issues such as single-channel memory are flagged separately.
What the results mean
- Effective rate
- Double the DRAM frequency, and the figure the memory is sold as. A 3200 MT/s kit reports 1600 MHz, and both numbers are correct.
- Modules listed
- One module means single channel, which costs a substantial share of memory bandwidth. Adding a matched second module is one of the cheapest real upgrades available.
- Memory profile
- Whether XMP, EXPO or DOCP appears to be enabled. Without it, memory runs at a conservative fallback speed rather than what you paid for.
Common problems and fixes
- The processor is reported at a much lower speed than its rating
- Power management, almost certainly. Modern processors drop to a few hundred megahertz when idle, and CPU-Z reports the speed at the moment the report was saved. To see the real maximum, run a load in the background and take the report while it is running.
- Memory is running slower than the kit is rated for
- The memory profile is not enabled. Memory ships at a conservative default speed and only reaches its rated speed when XMP, EXPO or DOCP is switched on in firmware. It is a single setting, and it is why a great many machines quietly run their memory a third slower than it is capable of.
Frequently asked questions
Why is my DDR4 3200 memory reported as 1600 MHz?
Because DDR means double data rate: it transfers on both the rising and falling edge of the clock, so the effective rate is twice the clock frequency. The kit is running exactly as intended, and CPU-Z is reporting the actual clock rather than the marketing figure.
Does dual channel really matter?
Yes, and more than most people expect. It roughly doubles memory bandwidth, which matters enormously for integrated graphics and noticeably for compilation, video work and anything moving large amounts of data. Two 8 GB modules beat a single 16 GB module for almost every workload.
Are tighter timings worth chasing?
Rarely, outside benchmarking. The difference between a good and an excellent kit at the same speed is a few percent in most real workloads. Getting the memory to its rated speed at all, and getting it into dual channel, both matter far more than timings.
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