Broadwell-E CPU Benchmarks
Broadwell-E has been released a few weeks ago to consumers, and we have had our hands on some samples previous to that. We would like to share some of the relevant specifications of the BW-E family and detail some of the early results we have seen with them.
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|
CPU |
i7-6950X |
i7-6900K |
i7-6850K |
i7-6800K |
|
Cores/Threads |
10/20 |
8/16 |
6/12 |
6/12 |
|
Core Clock |
3.00GHz |
3.20GHz |
3.60GHz |
3.4GHz |
|
L3 Cache |
25MB |
20MB |
15MB |
15MB |
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During our testing here at ICC we have seen a 7% Instruction per cycle (IPC) improvement over the HW-E CPUs. Â Our testing was done utilizing RHEL7 and trivial benchmark tools such as sysbench. The methodology behind the testing was to pit a 5960X @ 4.0GHz vs a 6950X @ 4.0GHz and do several benchmarks that give us different metrics against instruction sets. Â This means a 4.3GHz 6950X would be nearly equivalent to a 4.6GHz 5960X with the instruction sets that we have put to the test.
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The 6950X, along with 2 additional cores, brings 5MB more L3 cache. Â The total L3 cache for the CPU comes in at 25MB. Â The increase in L3 is always welcome and will be a great boost in performance in many high-frequency trading (HFT) applications. Â
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With our sample size, the average overclock for the 6950X clocks in between 4GHz - 4.2GHz (update: now to 4.5GHz).  These are safe clock speeds that we feel are stable and under control heat-wise.  W‹e are working around the clock with our vendors to fix issues in the BIOS that are causing testing and production delays for the BW-E platform.
Â
The 6900K 8-core seems to be a bit of a dud at the moment, multiple samples have issues even booting up at 4.5GHz, and nearly impossible to go any higher. Â Our sample currently (with BIOS issues as well) is hitting 4.4GHz, and having trouble with stability at 4.5GHz.
Â
I would like to stress that these results are with Engineering Samples provided by Intel. This is extremely early in the lifespan of Broadwell-E, but with the results we see in core performance -- as we move on through the batches of these CPUs -- we will hopefully see better overclocking potential as has been seen in the past generations.
-Written by Betim
Broadwell-E CPU Benchmarks
Broadwell-E has been released a few weeks ago to consumers, and we have had our hands on some samples previous to that. We would like to share some of the relevant specifications of the BW-E family and detail some of the early results we have seen with them.
Â
|
CPU |
i7-6950X |
i7-6900K |
i7-6850K |
i7-6800K |
|
Cores/Threads |
10/20 |
8/16 |
6/12 |
6/12 |
|
Core Clock |
3.00GHz |
3.20GHz |
3.60GHz |
3.4GHz |
|
L3 Cache |
25MB |
20MB |
15MB |
15MB |
Â
During our testing here at ICC we have seen a 7% Instruction per cycle (IPC) improvement over the HW-E CPUs. Â Our testing was done utilizing RHEL7 and trivial benchmark tools such as sysbench. The methodology behind the testing was to pit a 5960X @ 4.0GHz vs a 6950X @ 4.0GHz and do several benchmarks that give us different metrics against instruction sets. Â This means a 4.3GHz 6950X would be nearly equivalent to a 4.6GHz 5960X with the instruction sets that we have put to the test.
Â
The 6950X, along with 2 additional cores, brings 5MB more L3 cache. Â The total L3 cache for the CPU comes in at 25MB. Â The increase in L3 is always welcome and will be a great boost in performance in many high-frequency trading (HFT) applications. Â
Â
With our sample size, the average overclock for the 6950X clocks in between 4GHz - 4.2GHz (update: now to 4.5GHz).  These are safe clock speeds that we feel are stable and under control heat-wise.  W‹e are working around the clock with our vendors to fix issues in the BIOS that are causing testing and production delays for the BW-E platform.
Â
The 6900K 8-core seems to be a bit of a dud at the moment, multiple samples have issues even booting up at 4.5GHz, and nearly impossible to go any higher. Â Our sample currently (with BIOS issues as well) is hitting 4.4GHz, and having trouble with stability at 4.5GHz.
Â
I would like to stress that these results are with Engineering Samples provided by Intel. This is extremely early in the lifespan of Broadwell-E, but with the results we see in core performance -- as we move on through the batches of these CPUs -- we will hopefully see better overclocking potential as has been seen in the past generations.
-Written by Betim