Bosch Benchmark Series 24 in. Stainless Steel Top Control Tall Tub Dishwasher with Stainless Steel Tub, 39 dBA SHX9PCM5N
Bosch
Best for
Best quietest
Amazon rating
Amazon aggregate, one input among many in the Verdict Score
Based on 1 trusted source
Current price
$1,775.00
Updated May 15, 2026 · 1 min read
Sources behind this verdict
11 reviewers weighted by source trust
The consensus
What reviewers found
Synthesized across the trust-weighted source mix below.
Across the reviewers we read, the Bosch Benchmark SHX9PCM5N is the quietest mainstream dishwasher you can reasonably buy, with a 39 dBA rating that bestbuy.com and costco.com verified-purchase reviewers describe as functionally silent. r/Appliances and r/BuyItForLife threads echo this — one r/BuyItForLife commenter calls their Benchmark 'super quiet' and notes it's made in Germany, which keeps coming up as a reliability proxy in specialist threads. Beyond noise, retailer reviewers single out the CrystalDry system and the LED interior lighting, and r/Appliances users with hard or well water specifically mention the built-in water softener as a meaningful upgrade over the 800 Series.
What reviewers liked
- 39 dBA is the quietest in this candidate pool — described as inaudible by retailer reviewers
- Built-in water softener flagged by r/Appliances users as useful for hard or well water
- CrystalDry drying praised across bestbuy.com and costco.com reviews
- Strong reliability signal in r/BuyItForLife threads, with German manufacturing repeatedly cited
Where it falls short
- At roughly $1,775, the price premium over the 800 Series is hard to justify on cleaning alone, per r/Appliances comparisons
- r/Appliances commenters describe interior volume as smaller than expected for the price
- Rack layout draws the same mixed reactions as the 800 Series
- No independent lab test results were supplied for this specific SKU
Across the reviewers we read, the Bosch Benchmark SHX9PCM5N is the quietest mainstream dishwasher you can reasonably buy, with a 39 dBA rating that bestbuy.com and costco.com verified-purchase reviewers describe as functionally silent. r/Appliances and r/BuyItForLife threads echo this — one r/BuyItForLife commenter calls their Benchmark 'super quiet' and notes it's made in Germany, which keeps coming up as a reliability proxy in specialist threads.
Beyond noise, retailer reviewers single out the CrystalDry system and the LED interior lighting, and r/Appliances users with hard or well water specifically mention the built-in water softener as a meaningful upgrade over the 800 Series. The disagreement worth surfacing: an r/Appliances thread comparing the Benchmark directly to the 800 is mixed on whether the price jump is worth it, with several owners saying the rack layout isn't materially better and the cleaning gap is small.
This is a 'last 5 dB' purchase. If you have an open kitchen, hard water, or simply want the quietest unit in the lineup, the trust-weighted consensus supports it. If you're buying primarily on cleaning performance, the cheaper 800 Series gets you most of the way there.
- Highlight 1
- Great tools at a great price
When a recent power surge in our neighborhood took out a few of our appliances, our LG dishwasher fell victim.. Not wanting to deal with the repair service and inevitable delays associated with that, we decided to replace it. Our model was the last of…
We got a 800 series early this year and it's been fantastic. Quiet, cleans well, dries well, and you can fit a ton of stuff in it.
I am really happy with my Bosch Benchmark dishwasher, it is made in Germany. It's super quiet and I can hardly tell when it's running. I ...
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“Bosch Benchmark Dishwasher Review for 2024” · YouTube
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