Corsair Vengeance RGB LED DDR4 4266 MHz 8GB x 2 Kit – Test Analysis

Corsair Vengeance RGB LED DDR4 4266 MHz 8GB x 2 Kit – Test Analysis

DDR4 has been launched for quite some time now and it is only in the past year or so that we have started seeing high speed/tight timing Kits in the market. For a long time, DDR4 memory speeds have been around the 3000 MHz mark and only after Samsung released their highly famed ‘B-Die’ IC that manufacturers introduced some truly fast rated kits. Earlier with Samsung ‘E-Die’ we did see a few kits but almost all of them were 4GB Modules based Dual Channel or Quad Channel Kits but now with B-Die  we are seeing 8GB modules based  kits.

Almost all major brands like Corsair, G.Skill, ADATA, Kingston, Teamgroup, Galax HOF and many more have 4000 MHz + Kits available.

Today we are testing the Corsair Vengeance RGB LED Kit rated at a mind numbing 4266 MHz! If our knowledge serves us right, this is one of the fastest kits Corsair has released lately. With newer Intel Platforms making their way to the market, we should see even higher rated kits as  newer CPUs sport much better IMC and also B-Die ICs become even more polished.

Without wasting much time, let’s proceed.

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Intel Core i7 7700K @ 5GHz / 4.5GHz Cache (4Core/8Threads) CPU (Delidded, Retail)

Asus ROG Maximus IX Apex Motherboard (Latest retail BIOS)

8GB x 2 Corsair Vengeance RGB 4266 MHz DDR4 RAM

Kingston UV400 120GB SATA SSD

Asus GeForce GT610 2GB Graphic Card

Coolermaster Masterliquid 240 AIO Cooler

Coolermaster Mastergel Maker Thermal Paste

Superflower Leadex Gold 1600W Power Supply  

Software Setup & Details: 

Windows 10 X64 Pro with latest updates installed.

Geekbench 3 X64 Benchmark

Geekbench 4 X64 Benchmark

AIDA64 Cache & Memory Benchmark (Latest Version)

Geekbench 3

Geekbench 3 is a very nice all round benchmark which tests various aspects of system performance without biasing the results based on a specific component. Therefore, Memory, CPU, Memory Timings, Cache frequency, everything comes into the picture here.

First we take a look at the Single Core performance,

Followed by Multi Core performance. We have deliberately kept the Single Core and Multi Core charts separate to make things simple to understand.

In the above results it is seen that in Multi Core performance, performance scales well upto 4000MHz but the increment slows down after that because of relaxed memory timings and this performance hit is seen more clearly in the Single Core performance test.

Geekbench 4 

Next in line is Geekbench 4, which is the successor of Geekbench 3


If you have seen the above graphs for Geekbench 3 & 4, it is evident that post 4000 MHz there is drop in performance. The reason for this lies in the timings used for speeds beyond 4000 MHz. To be able to keep using the same timings, we would have had to push higher voltages which although possible isn’t a practical as it will eventually degrade the memory and the CPU in the long run. Therefore timings had to be relaxed for this and the performance hit is visible. As much as frequency matters for performance, timings play an equally important role and should be considered while buying a new memory kit.

AIDA64 Cache & Memory Benchmark

AIDA64 is a very old multi-purpose utility which offers lots of functions like, in-depth system information, inbuilt stability tests, inbuilt benchmark utility, System monitoring like voltages, temperatures, etc.

Since our focus was on testing memory, we focused on the Cache & Memory Benchmark.

We see consistent performance from 3600MHz up to 4300MHz with certain exceptions. As can be seen from the graph, the timings were similar till 4000MHz but after that we relaxed them but that didn’t seem to hamper memory write performance but in case of Memory Read, we do see a marginal decline in performance post 4000MHz mark, again thanks to relaxed timings. Memory Copy performance doesn’t seem to get affected much through the tests. The performance hit isn’t as conspicuous it was in Geekbench 3 & 4 benchmarks. Something worth noting here is that even though we have specified Primary memory timings for each frequency step, the secondary and tertiary timings are equally important and have a bearing on performance. Asus motherboards usually follow a different memory topology as opposed to Intel recommended topology.  What this means is that instead of following Intel’s reference design for memory topology, Asus uses a bit more aggressive and optimized topology which can deliver extremely fast performance due to reduced latencies but at times can become very hard on the memory modules and CPU memory controllers to handle such aggressive settings. To avoid instability and erratic performance, the BIOS is optimized to try and force aggressive settings but roll back and apply much more conservative settings if the memory modules or memory controller can’t handle it.

Memory Scaling

For benchmarking and performance analysis, it is essential to use the same settings throughout so that the final results are relevant and easy to comprehend.

As far as scaling is concerned, B-Die is known to deliver some truly amazing clocks speeds as well as tighter timings. Very few Memory IC are capable of doing that. With a kit rated to work @ 4266 MHz out of the box, it is evident that this kit uses extremely high bin memory IC with a very good quality PCB and finely tuned SPD tables which ensure flawless performance without compromising stability even at such high speeds.It is worth noting that at 4266 MHz, this kit almost at the limit of what highly binned Samsung B die can deliver on stock air cooling.

But that doesn’t stop us from testing how much more does this kit have in it. So let’s check out.


Quite honestly,we weren’t expecting much scaling at all, atleast on stock air cooling since the kit is already rated at such high frequency. Even though an improvement of 75 MHz might seem low,it should be noted that this overclock was achieved on a kit which is already rated at 4266 MHz.  Agreed that under LN2 for both CPU and Memory, we should see it scale more because a colder IMC does make a lot of difference. Nonetheless, this is truly amazing performance and scaling from a premium B-Die based memory kit.

To wrap this up, here is our conclusion,

Rated at very aggresive frequency out of the box

Based on Samsung B-Die IC so tuning potential is extremely good

High quality PCB and very highly binned Memory IC ensuring stability and performance at rated speeds.

RGB Led Lighting


After we finished testing this kit on the Intel Z270 + Kaby Lake platform, we were very happy and impressed with what we saw and experienced throughout the testing. Moving on we are going to test this kit on even more platforms like Intel Z370 + Coffee Lake, AMD Ryzen, Intel X299 + Kaby Lake-X and so on.So stay tuned as lot of exciting stuff is coming up!


Team OC Inc.


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