I still have my 512gb 840 Evo SSD as a secondary drive
tuppenyturtle in r/technology
Source6 Reddit comments and posts discuss both products: 3 lean toward Samsung 870 EVO, 1 toward Samsung 840 EVO 500GB, and 2 don't pick a side.
Green marks the row winner: the strongest supported feature sentiment with at least 3 mentions, or the lowest listed price. Everything else stays neutral.
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| Feature | Samsung 870 EVO | Samsung 840 EVO 500GB |
|---|---|---|
| Price | ||
| reliability | ||
| value | ||
| overall performance | ||
| endurance | ||
| dram cache | ||
| price | ||
| read speed | ||
| compatibility | No mentions | |
| storage capacity | No mentions | |
| write speed | No mentions |

Samsung
$219.00
Reddit score
RedDB's algorithmic rating based only on relevant Reddit opinions.
It uses one opinion per author: their highest-upvoted mention.
Evidence volume, recency, and votes affect the result.
The opinion count and sentiment bar include all analyzed relevant opinions; the bar does not represent the score out of 100.
We may earn a small commission.

Samsung
$199.99
Reddit score
RedDB's algorithmic rating based only on relevant Reddit opinions.
It uses one opinion per author: their highest-upvoted mention.
Evidence volume, recency, and votes affect the result.
The opinion count and sentiment bar include all analyzed relevant opinions; the bar does not represent the score out of 100.
We may earn a small commission.
6 Reddit comments and posts discuss both products: 3 lean toward Samsung 870 EVO, 1 toward Samsung 840 EVO 500GB, and 2 don't pick a side. Overall, Reddit leans toward Samsung 870 EVO.
Across all discussions RedDB tracks, Samsung 870 EVO has 61% positive sentiment over 509 Reddit mentions, while Samsung 840 EVO 500GB has 53% positive sentiment over 17 mentions.