AMD Opteron 6344 vs AMD Opteron 6378 Comparison
AMD Opteron 6344
Opteron 6378
PERFORMANCE BENCHMARKS
Analysis: AMD Opteron 6344 vs AMD Opteron 6378
The Verdict
The AMD Opteron 6344 is the clear benchmark winner over the AMD Opteron 6378 in every recorded Cinebench test. Despite having fewer cores, the 6344 edges out the 6378 in both single-core and multi-core workloads, with a 3.1% lead in Cinebench R23 multi-core and a 3.1% lead in Cinebench R23 single-core. The 6378, with its higher core count, cannot translate that into a performance advantage in this dataset.
For users choosing between these two server processors, the data points to the 6344 for all measured workloads. Its higher base clock of 2.60 GHz versus the 6378's 2.40 GHz, combined with consistent benchmark wins across all six tests, makes it the stronger performer. The 6378's only advantage is its 16 cores versus 12, but that does not appear in any benchmark score. The 6344 also carries a lower launch MSRP of $415 compared to $867 for the 6378, though pricing should not be the primary factor given the performance gap.
The average benchmark score reinforces the 6344's position. The 6344 records an average score of 1492, while the 6378 scores 1447, a difference of roughly 3%. Both processors sit at the 38th percentile among all CPUs, indicating they occupy the same performance tier relative to the broader market. The nearest rivals for the 6344 include the Intel Core i5-4590S at 1493 (0% delta) and the Intel Core i7-3770S at 1498 (-0.4% delta), while the 6378's nearest rival is the Intel Core i5-7300HQ at 1448 (-0.1% delta) and the AMD Ryzen 3 2200GE at 1444 (0.2% delta).
FAQ
Q: Which processor wins in multi-core Cinebench R23?
A: The AMD Opteron 6344 wins with a score of 5158, compared to the AMD Opteron 6378's 5005, a 3.1% advantage.
Q: Does the 6378's higher core count ever translate into a win?
A: No. The 6378 has 16 cores versus the 6344's 12, but it loses every recorded benchmark. The 6344 wins all six head-to-head tests, with deltas ranging from 2.8% to 3.1%.
Q: What is the average benchmark score difference?
A: The 6344 averages 1492, while the 6378 averages 1447. The 6344 leads by approximately 3% in average score.
Q: Are these processors in the same performance percentile?
A: Yes, both sit at the 38th percentile among all CPUs, placing them in the same performance tier relative to the broader market.
Q: What are the nearest rivals for each processor?
A: For the 6344, the nearest rival is the Intel Core i5-4590S with an average score of 1493 (0% delta). For the 6378, the nearest rival is the Intel Core i5-7300HQ with an average score of 1448 (-0.1% delta).
Q: Do both processors share the same memory support?
A: Yes, both support DDR3 memory with quad-channel bus and identical memory bandwidth of 59.7 GB/s.
Architecture Differences
Both processors belong to the AMD Opteron 6000 series, share the Piledriver architecture, and carry the Abu Dhabi codename. They are fabricated on the same 32 nm process node at GlobalFoundries, with identical transistor counts of 2,400 million and the same die size of 2x 315 mm². The core difference lies in the number of cores: the 6344 has 12 cores and 12 threads, while the 6378 has 16 cores and 16 threads. Neither processor supports SMT, so threads equal cores.
The L1 cache differs accordingly. The 6344 has 576 KB of L1 cache, while the 6378 has 768 KB, reflecting the additional cores. The L2 cache is structured per module at 2 MB for both, and the L3 cache is 8 MB per die for both. The memory support is identical: DDR3, quad-channel, with 59.7 GB/s bandwidth and ECC support. Both use AMD Socket G34 and PCIe Gen 2. Neither has integrated graphics. Both were released on the same date and are end-of-life products.
The cache architecture uses a per-module L2 design, meaning the L2 allocation scales with the number of modules rather than cores. With 12 cores in the 6344 and 16 in the 6378, the L1 cache size difference directly reflects the core count, but the L2 and L3 configurations remain the same between the two parts.
Specification Differences
| Specification | AMD Opteron 6344 | AMD Opteron 6378 |
|---------------|------------------|------------------|
| Cores | 12 | 16 |
| Threads | 12 | 16 |
| Base Clock | 2.60 GHz | 2.40 GHz |
| Boost Clock | 3.20 GHz | 3.30 GHz |
| L1 Cache | 576 KB | 768 KB |
| Launch MSRP | $415 | $867 |
| Part Number | OS6344WKTCGHK | OS6378WKTGGHK |
The 6344 has a higher base clock by 0.20 GHz, while the 6378 has a higher boost clock by 0.10 GHz. This creates an interesting dynamic where the 6344 starts faster but the 6378 can reach higher peak frequencies. However, the benchmark data shows the 6344 winning all six tests, suggesting that the base clock advantage has a greater impact on the recorded workloads than the boost clock advantage. The core count difference is significant on paper, but the measured performance does not follow this specification advantage.
Head-to-Head Benchmarks
The AMD Opteron 6344 wins all six recorded Cinebench tests against the AMD Opteron 6378. The margins are consistent, ranging from 2.8% to 3.1%, which indicates a stable performance advantage across different workload types.
In Cinebench R15 multi-core, the 6344 scores 519 against the 6378's 504, a 3% lead. In Cinebench R15 single-core, the 6344 scores 73 against 71, a 2.8% lead. The single-core margin is the smallest recorded, reflecting the 6378's higher boost clock of 3.30 GHz versus 3.20 GHz. Despite that boost advantage, the 6344 still wins.
Cinebench R20 shows a similar pattern. Multi-core: 6344 scores 2166, 6378 scores 2102, a 3% lead. Single-core: 6344 scores 305, 6378 scores 296, a 3% lead. The consistency of the 3% margin across both multi-core and single-core tests suggests the base clock difference is the dominant factor.
Cinebench R23 delivers the largest margins. Multi-core: 6344 scores 5158, 6378 scores 5005, a 3.1% lead. Single-core: 6344 scores 728, 6378 scores 706, a 3.1% lead. These are the highest deltas in the head-to-head set, and they come from the most recent benchmark versions.
The average benchmark score comparison also favors the 6344, with 1492 versus 1447. The 6344's nearest rival, the Intel Core i5-4590S, scores 1493 with a 0% delta, meaning the 6344 essentially matches that Intel part. The 6378's nearest rival, the Intel Core i5-7300HQ, scores 1448 with a -0.1% delta, meaning the 6378 trails that Intel part by a hair. This puts the 6344 in slightly better company than the 6378 when viewed against the broader CPU landscape.
Where Each One Wins
The AMD Opteron 6344 wins in every measured scenario. It is the better choice for single-core workloads, where it leads by 2.8% to 3.1% depending on the benchmark version. It is also the better choice for multi-core workloads, where it leads by 3% to 3.1%. The 6344's higher base clock of 2.60 GHz provides a consistent advantage that persists even when the 6378's higher boost clock should close the gap.
The AMD Opteron 6378 has no benchmark wins in this dataset. Its 16 cores and 768 KB of L1 cache are specification advantages, but they do not translate into measured performance gains. The 6378's higher boost clock of 3.30 GHz also fails to overcome the 6344's base clock advantage in single-core tests. The only scenario where the 6378 could be said to "win" is in core count for workloads that might scale beyond what the benchmarks capture, but no such advantage appears in the recorded data.
The 6344's launch MSRP of $415 versus the 6378's $867 further separates them, though pricing should not be the deciding factor when the performance data so clearly favors the cheaper part. The 6344 also holds a slight edge in percentile positioning, though both sit at 38, meaning they are statistically indistinguishable in the broader CPU ranking. For practical server deployment, the data supports choosing the 6344 over the 6378 for all Cinebench-based workloads. The 6378's only path to relevance would be a workload that exploits its extra four cores in a way these benchmarks do not measure.