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Intel Broadwell-E Core i7-6950X vs Core i7-5960X Benchmark Results Leaked – Overclocked Performance at 4.5 GHz Detailed

Hassan Mujtaba
Posted May 5, 2016
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The first benchmarks results of Intel’s flagship Core i7-6950X Broadwell-E processor have been unveiled. The performance results of Intel’s top, high-end desktop chip provide us a detailed look at how the chip performs with stock and overclocked configurations. These performance results aren’t the first to leak ahead of launch since we got to see the benchmarks of the Core i7-6850K and Core i7-6900K a few days ago too.

Intel’s Core i7-6950X is the top dog of the Broadwell-E HEDT family!

Intel Core i7-6950X vs Core i7-5960X Processor Bencnmarks Unveiled – Clocks Up To 4.5 GHz

The Intel Core i7-6950X is the top gun of the Broadwell-E family which is launching at Computex 2016. Intel is going one step ahead with this SKU, offering consumers 10 cores and 20 threads. The chip was tested against the last flagship offering from Intel, the Core i7-5960X (Haswell-E) which is a 8 core, 16 thread chip. The CPUs based on Broadwell utilize the modern 14nm process node while the Haswell CPUs utilize the 22nm process node.

The testing was performed by Silicon Lottery at overclock.net forums. Their site has already listed the Core i7-6950X sample on their main page with a price tag of $2099 US. The chip is a engineering sample but does run and can be used on any X99 motherboard.

“This is an pre-release engineering sample (ES) processor. Because Broadwell-E has not yet launched, you may come across various issues if your motherboard bios is not yet compatible.

Returns are NOT ACCEPTED for this processor, all sales are final.” via Silicon Lottery

Intel Core i7-6950X and Core i7-5960X Processor Specifications Comparison:

While the Core i7-6850K and Core i7-5820K comparison was technically justified, the Core i7-6950X to Core i7-5960X comparison is kind of not the same as both processors feature different specs and different price range. The Core i7-6950X is Intel’s latest processor with 10 cores and 20 threads. The processor will run at a base clock of 3.00 GHz and a 3.50 GHz boost clock. The processor will come in an unlocked package to allow overclocking support to enthusiasts. The processor rocks 25 MB of L3 cache (2.5 MB per core) and will be compatible with current generation X99 motherboards that feature the LGA 2011-v3 socket.

Intel Core i7-6950X vs Core i7-5960X Specifications (Image Credits: Silicon Lottery)

The Intel Core i7-5960X is based on the older Haswell architecture and features 8 cores with 16 threads. The chip is clocked at 3.00 GHz base and 3.50 GHz boost clocks which are identical to the Core i7-6950X but the difference is within the core count with Broadwell-E featuring an extra two cores. The Core i7-5960X also has total of 20 MB L3 cache but does feature the same 140W package as the Core i7-5960X. Since there isn’t any deca core processor available on the market, Intel is rumored to bump the price of their Broadwell chip up to 1500 USD which is 500 bucks more compared to the Haswell-E chip.

Intel HEDT Processor Families:

Intel HEDT FamilyGulftownSandy Bridge-EIvy Bridge-EHaswell-EBroadwell-ESkylake-XKaby Lake-XCoffee Lake-X
Process Node32nm32nm22nm22nm14nm14nm14nm14nm
Flagship SKUCore i7-980XCore i7-3960XCore i7-4960XCore i7-5960XCore i7-6950XCore i7-7000 XCore i7-7000 SeriesCore i7-8000 series
Max Cores/Threads6/126/126/128/1610/2010/204/86/12
Clock Speeds3.33/3,60 GHz3.30/3.90 GHz3.60/4.00 GHz3.00/3.50 GHz3.00/3.50 GHzTBDTBDTBD
Max Cache12 MB L315 MB L315 MB L320 MB L325 MB L313.75 MB L38 MB L3TBD
Max PCI-Express Lanes32 Gen240 Gen240 Gen340 Gen340 Gen344 Gen316 Gen3TBD
Chipset CompatiblityX58 ChipsetX79 ChipsetX79 ChipsetX99 ChipsetX99 ChipsetKaby Lake PCHKaby Lake PCHKaby Lake PCH?
Socket CompatiblityLGA 1366LGA 2011LGA 2011LGA 2011-3LGA 2011-3LGA 2066LGA 2066LGA 2066?
Memory CompatiblityDDR3-1066DDR3-1600DDR3-1866DDR4-2133DDR4-2400DDR4-2667DDR4-2667DDR4-2667?
Max TDP130W130W130W140W140W140W112WTBD
LaunchQ1 2010Q4 2011Q3 2013Q3 2014Q2 20162H 20172H 20172H2018
Launch Price$999 US$999 US$999 US$1059 US$1700 US~$1500 US$350+?TBD
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Intel Core i7-6950X and Core i7-5960X Processor Performance Comparison:

We are aware that our readers love performance numbers and so we will be providing you with those. The chip tested against the Core i7-6950X is technically not the 5960X but its the Xeon equivalent which provides almost the same performance with a difference under 1% at most. Both processors were tested on a ASUS Rampage V Extreme motherboard which features an X99 socket. As indicated previously, Broadwell-E lineup is compatible with the existing and upcoming X99 motherboards. Cooler used was a Corsair H105 which tired its best to keep the chip cool during the tests and under overclocks.

The Core i7-6950X was tested on ASUS’s flagship X99 Rampage V Extreme motherboard.

The performance results show us a good increase in performance. A clock-to-clock comparison of 4.00 GHz on both chips yields scores of 1904 (Multi-Threading) and 151 (Single Threaded) on the Core i7-6950X while the Core i7-5960X should score 1592 (Multi-Threading) and 160 (Single Threaded) points. In XTU Benchmark, the 6950X scores 2354 marks against the 2001 marks of the 5960X. The Aida64 numbers show an across the board leverage in memory transfer rates. The tester used 16 GB of DDR4 memory clocked at 3.2 GHz.

Intel Core i7-6950X vs Core i7-5960X Stock Benchmarks (Image Credits: Silicon Lottery)

We also have overclocked numbers for the chip where the 6950X score 2299 points in Cinebench R15 multi-threading test at 4.37 GHz and 2327 points at 4.5 GHz. The tester reports that he managed to get a stable OC around 4.3-4.4 GHz which is pretty impressive given that this is still an engineering sample. You can read the benchmark results in detail below:

Intel Core i7-6950X vs Core i7-5960X Overclocked Benchmarks (Image Credits: Silicon Lottery)

Intel Core i7-6950X vs Core i7-5960X Cinebench:

CineBench R15 BenchmarkSingle ThreadedMulti-Threaded
Intel Core i7-6950X (4.50 GHz)Not run2327 Points
Intel Core i7-6950X (4.00 GHz)151 Points1904 Points
Intel Core i7-5960X (4.00 GHz)160 Points1592 Points
Intel Core i7-6900K (3.60 GHz)Not run1471 Points
Intel Core i7-6850K (4.20 GHz)Not run1311 Points
Intel Core i7-5820K (4.20 GHz)Not run1191 Points

Intel Core i7-6950X vs Core i7-5960X Aida64:

Processor NameMemory ReadMemory WriteMemory CopyMemory Latency
Intel Core i7-6950X71865 MB/s73505 MB/s65429 MB/s55.8 ns
Intel Core i7-5960X70158 MB/s53557 MB/s73098 MB/s55.0 ns

MSI, Gigabyte, ASUS, EVGA Prepare New X99 Motherboards For Broadwell-E

We also would like you to know that motherboard makers are already prepping up new X99 products for the Broadwell-E launch. We have seen three brand new motherboards from Gigabyte, EVGA has also teased their X99 FTW K motherboard but now we know that ASUS and MSI are also in the bandwagon. MSI is ready with a all new X99 Gaming Pro motherboard that comes with a revised design while ASUS will be deploying the latest X99 A II, X99 Deluxe II and X99 STRIX Gaming series.

Following is the full list of Broadwell-E processors that will be launching at Computex in a matter of weeks:

Intel Broadwell-E Family

Processor NameIntel Core i7-6950XIntel Core i7-6900KIntel Core i7-6850KIntel Core i7-6800K
Process Node14nm14nm14nm14nm
Cores/Threads10/208/166/126/12
Core Clock3.00 GHz3.20 GHz3.60 GHz3.40 GHz
Boost Clock3.50 GHz3.70 GHz3.80 GHz3.60 GHz
L3 Cache25 MB L3 Cache20 MB L3 Cache15 MB L3 Cache15 MB L3 Cache
Unlocked Multiplier (BCLK OC)Yes, Full Range OCYes, Full Range OCYes, Full Range OCYes, Full Range OC
ChipsetX99X99X99X99
SocketLGA 2011-3LGA 2011-3LGA 2011-3LGA 2011-3
PCI-E Lanes40404028
Memory SupportDDR4-2400 MHzDDR4-2400 MHzDDR4-2400 MHzDDR4-2400 MHz
TDP140W140W140W140W
Launch Price$1723 US$1089 US$617 US$434 US

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