G.Skill Ripjaws 4 DDR4-3000MHz 4X4GB Memory Kit Review

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G.Skill has been around for 25 years now, and since their inception have brought performance memory products to the PC enthusiast crowd. With the release of the Intel X99 chipset, and the accompanying need for DDR4 memory, G.Skill has their initial product offerings available in the form of their Ripjaws 4 series. They sent along their DDR4 3000 MHz 4X4 GB kit for us to have a look at today, which just happens to be the same kit we used for the Intel Haswell-E i7 5960X review. We didn’t do much with this memory past setting it to its stock configuration during the i7 5960X review, because we wanted to explore it more in depth here. So, let’s dive in and see what G.Skill’s entry into the world of DDR4 has to offer.

Specifications/Features/Product Tour

There isn’t a whole lot of information available at the G.Skill website on this kit, but here is what I was able to piece together for specifications.

G.Skill Ripjaws 4 DDR4-3000 4X4GB Specifications
Part Number
DDR4 – 288 Pin – Quad Channel Kit
3000 MHz (PC24000)
16 GB Total (4X4 GB Modules)
Major Timings
Operating Voltage
1.35 V
XMPCompatible with XMP 2.0
Available in Red/Black/Blue

Once the memory is plugged into the system, here is what the BIOS and CPU-Z show. Both the BIOS and CPU-Z show Max Bandwidth being 2133 MHz, but the CPU-Z memory tab shows the memory running at its rated speed and timings. It’s probably pulling that information from the JDEC standard of 2133 MHz for DDR4 memory.


CPU-Z Memory and SPD Tabs
CPU-Z Memory and SPD Tabs

The Ripjaws 4 series of memory will be available in a wide variety of speeds and capacities. Beginning at speeds of 2133 MHz and going as high as 3200 MHz, the kits are available in 16, 32, and 64 GB configurations. The 2800 MHz kits and below will operate at 1.2 V, while the higher speed kits will require 1.35 V. You can also choose from three available colors – red, black, or blue.

Ripjaws4 Product Lineup
Ripjaws 4 Product Lineup

Ripjaws4 Color Options
Ripjaws 4 Color Options

G.Skill has all new redesigned heatspreaders for the Ripjaws 4 modules, but they still kept the overall height at 40 mm to ensure maximum compatibility with CPU heatsinks. You’ll also notice by looking at the image below the PCB is black. Nothing kills the aesthetics of a nice looking memory module quicker than a green PCB, but that won’t be a problem here!

Redesigned Heatspreaders
Redesigned Heatspreaders

The Ripjaws 4 kit we are reviewing today comes packaged in a clear plastic clam-shell container. Inside, you’ll find the four memory modules and a nifty little case badge. The cardboard insert is where all the packaging’s graphics are printed and includes a marketing write-up about a few of the features.

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Photo Op

As you can see by the above slideshow, the kit we have today is the red heatspreader version. G.Skill’s enthusiast memory has always been attractive looking, and that doesn’t change with the Ripjaws 4 series. Both sides of the modules have a sharp looking emblem, but one side has a sticker that covers most of the emblem. The sticker has information that’s nice to have handy when you’re setting timings and voltages manually. The heatspreaders and modules exude quality and feel sturdy and well-made when handling them. Here are several pictures to enjoy before we dive in to the testing phase of the review… Enjoy!

gskill_ripjaws4 (12)
Ripjaws 4 Glamor Shot

Ripjaws 4
Ripjaws 4 Alternate View

Ripjaws 4 Emblem Side
Ripjaws 4 Emblem Side

Ripjaws 4 Sticker Side
Ripjaws 4 Sticker Side

Ripjaws 4 Sticker Up Close
Ripjaws 4 Sticker Up Close

Ripjaws 4 Glamor Shot
Ripjaws 4 Glamor Shot

Testing for Stability at Rated Speed/Timings

The first thing we do is check for stability at the kit’s rated speed/timings. For this task, we call upon our UltraX R.S.T. Pro USB RAM tester, which was kindly provided by UltraX. The R.S.T. Pro is by far the most demanding way to test memory there is. In fact, it’s so tough on memory that many manufacturers use it to keep an eye on quality control during production runs. Depending on the capacity of the kit being tested, it can take a long time to complete the five loop testing we do. In the case of this kit, it took over seven hours to complete. After relentlessly beating on the G.Skill Ripjaws 4 for over seven hours, the R.S.T. Pro came up clean with no errors recorded. Below is a picture of the R.S.T. Pro we use and a screenshot showing it well into the sixth loop.

R.S.T. Pro Memory Tester
R.S.T. Pro Memory Tester

R.S.T. Pro 5+ Loops Complete
R.S.T. Pro 5+ Loops Complete

For in-OS testing, we use HyperPi and set it to use all 16 threads. HyperPi is a darn good stability test in its own right and will normally fail if either the CPU or memory isn’t 100% stable. If you don’t own a R.S.T. Pro, it’s probably the next best thing for testing memory stability. After passing the R.S.T Pro testing, we didn’t expect any stability problems with HyperPi and none were encountered. I think we can safely say the Ripjaws 4 kit is rock stable at advertised speed/timings/voltage.

gskill_ripjaws4 (17)
HyperPi Stable @ Advertised Specs


Test Setup

Because we don’t yet have any other DDR4 kits to compare, all we can really do is toss some DDR3 kits (dual and quad-channel) in the mix to get an idea of how those platforms stack up. So, to that end, we have three different test beds. All the DDR3 dual-channel kits were tested on the same exact system. The DDR3 quad-channel DDR4 quad-channel kits were tested on a different system obviously.

DDR3 Dual-Channel DDR3 Quad Channel
DDR4 Quad Channel
MotherboardASUS Maximus VI Formula Intel Z87 ChipsetEVGA X79 Dark
Intel X79 Chipset
ASUS X99-Deluxe
Intel X99 Chipset
CPUi7 4770K Haswelli7 4960X Ivy Bridge-Ei7 5960X Haswell-E
MemoryVarious – See Below Comparison KitsG.Skill TridentX DDR3-2400 MHz 4X4 GB 10-12-12-31G.Skill Ripjaws4 DDR4-3000 MHz 4X4 GB 15-15-15-35
Video CardEVGA GTX 780 Ti ClassifiedASUS HD7970 DCUII TOPEVGA GTX 780 Ti Classified
OSWindows 7 X64Win 7 X64Win7 X64
CoolingCustom WaterCustom WaterCustom Water

Below is the list of the memory kits used for comparison today.

Comparison Kits
BrandSeries Speed ChannelsCapacity Timings Voltage
KingstonHyperX BeastDDR3 2400Dual4×4 GB11-13-13-30-2T1.65 V
G.SKillTridentXDDR3 2666Dual2×4 GB11-13-13-35-2T1.65 V
G.SkillTridentXDDR3 2400Dual2×8 GB10-12-12-31-2T1.65 V
G.SKillTridentXDDR3-2400Quad4X4 GB10-12-12-31-2T1.65V
G.SkillRipjaws 4DDR4 3000Quad4×4 GB15-15-15-35-2T1.35 V

Because of the difference between the three platforms, most of the benchmark results you see below will favor the X79 and X99 and their increased CPU cores over the Z87 platform. Single threaded benchmarks will tend to favor the faster CPU core speeds, which is where the X99 and DDR4 platform will fall a bit behind.

The graphs below are based off of percentages with the G.Skill Ripjaws 4 kit being the basis, and therefore, always being 100%. The raw data used to make each graph can be found in the table below each chart. The first set of tests are from AIDA64 Engineer Edition and include the memory read/write/copy/latency benchmarks. The higher percentage is better, except for the latency test, where lower is better. As expected, the Ripjaws 4 kit wins out in the read and write tests, but falls a few percentage points behind the TridentX quad-channel kit in the copy test. Latency testing is pretty much a draw between the two quad-channel kits, but they are both no match for the the dual channel kits as we’d expect.

AIDA64 Memory Tests
AIDA64 Memory Tests
AIDA64 Memory Benchmarks – Raw Data
Kingston HyperX Beast DDR3-2400 (DC)35903375653483444.7
G.Skill TridentX DDR3-2400 (DC)35656376623481643.6
G.Skill TridentX DDR3-2666 (DC)32966415053559740.8
G.Skill TridentX DDR3-2400 (QC)56059412725566765.0
G.Skill Ripjaws 4 DDR4-3000 (QC)58303569005359564.0

SuperPi is a single threaded benchmark that normally prefers clock speed over all else, as we can see by the results below. However, wPrime uses all available threads, and the advantage clearly goes to the Ripjaws 4 and the eight core CPU in that system. These results are timed, so the lower percentage values are better in the chart.

SuperPi and wPrime Tests
SuperPi and wPrime Tests
SuperPi & wPrime Benchmarks – Raw Data
KitSuperPi 1M
SuperPi 32MwPrime 32M
wPrime 1024M
Kingston HyperX Beast DDR3-2400 (DC)8.955459.2805.819180.694
G.Skill TridentX DDR3-2400 (DC)8.954466.9245.851181.150
G.Skill TridentX DDR3-2666 (DC)8.923462.7905.881182.257
G.Skill TridentX DDR3-2400 (QC)9.260508.1424.557134.715
G.Skill Ripjaws 4 DDR4-3000 (QC)10.359536.8943.525103.647

7-zip for compression, x264 for video encoding, and Cinebench for rendering are all tested next. As you can see, these benchmarks also take advantage of the higher CPU core count and again show big advantages for the Ripjaws 4 kit because of that. If nothing else, we’ve learned the DDR4 kit doesn’t hold back the power of the i7 5960X processor!

Cinebench, x264, PoV Ray Testing
Cinebench, x264, PoV Ray Testing
7zip, x264 & Cinebench Benchmarks – Raw Data
KitCB R10
CB R11.5
x264 Pass 1x264 Pass 2
Kingston HyperX Beast DDR3-2400 (DC)314108.8424853192.4750.35
G.Skill TridentX DDR3-2400 (DC)313758.8524346193.7950.07
G.Skill TridentX DDR3-2666 (DC)315828.9024951196.6750.26
G.Skill TridentX DDR3 2400 (QC)3552311.2333358194.0160.75
G.Skill Ripjaws 4 DDR4-3000 (QC)4388415.2642473204.9583.42

In all reality, these results are an unfair fight in most cases because of the X99/Haswell-E platform advantages. We’re quickly learning about the advantages the X99 platform and DDR4 memory offers.


First up was an attempt at lowering the timings, which provided a respectable result. Raising the voltage to 1.5 V allowed the Cas Latency (CL) to be lowered to 13, which is a nice result. The Ras to Cas Delay (tRCD) and Ras Precharge (tRP) were having no part of being lowered. The Ripjaws 4 have no trouble running at 1T command rate either. The memory was stable 13-15-15-36-1T and passed the HyperPi 32M run about 10 seconds faster than at stock settings.

HyperPi Stable @ 13-15-15-35-1T
HyperPi Stable @ 13-15-15-35-1T

Overclocking the the MHz side, things get a bit dicey. In order to get any overclocking done at all, the 3rd tier timings had to be manipulated. This comes at the expense of overall performance, but some overclocking can be done if you relax those settings. Even with relaxed 3rd tier timings, don’t expect a massive amount of overclocking… it seems to be the nature of the beast with DDR4 memory. Just as I expect default timings to improve as the DDR4 technology matures, I’m sure better overclocking will too. We had to settle on a +115 MHz overclock, which isn’t too bad for an early adopter kit. The kit didn’t seem to respond to any voltage over 1.5 V and pretty much reached its limit at 3115 MHz. It passed another run of Super Pi 32M here, but you can see it took a pretty good performance hit. It took over 33 seconds longer to complete the Hyper Pi 32M run when compared to just overclocking the timings.

HyperPi Stablee at 3115 MHz
HyperPi Stable at 3115 MHz

DDR4 Memory overclocking seems to benefit more by working with timings, or at least with the Ripjaws 4 and the ASUS X99 Deluxe we’re using. Having said that, different motherboard and memory manufacturers may work things differently with their offerings. It’ll be interesting when we get around to testing other motherboards and memory kits to see how it all shakes out.


G.Skill did a very nice job with their initial DDR4 offering, and it performs terrific at stock settings. It’s rock solid stable at advertised speed/timings/voltage as witnessed by our stability testing. As far as overclocking goes, lowering the timings provided a substantial performance gain. Raising the MHz actually hurt performance because of the necessity to raise the 3rd tier timings. Again, that could just be motherboard specific and a whole different story on another motherboard. Time will tell. The redesigned heatspreaders do their job nicely and provide a good amount of aesthetic value. Whether you decide on red, black, or blue, this kit will look nice in your system build.

As I’m sure you’ve probably noticed by now, DDR4 memory doesn’t come cheap. The G.Skill Ripjaws 4 DDR4-3000 kit will set you back $329. Sure, that’s expensive, but right now it’s the only 3000 MHz kit available at Newegg. Couple that with Corsair pricing their 2800 MHz kit with lower timings for $379, and I think it’s a fair price.

If you’re going to be an early adopter and jump into the X99/Haswell-E game, the G.Skill Ripjaws 4 DDR4-3000 kit would make excellent memory choice. It’s fast, it’s stable, and it looks darn good too!

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Dino DeCesari (Lvcoyote)

About Dino DeCesari 230 Articles
Dino DeCesari was a pillar of the Overclockers.com community for over 13 years when he passed away suddenly in 2015. His legacy lives on through his hundreds of computer hardware reviews posted here. Dino spent time in the army as a Telecommunication Center Specialist and received a commendation medal. He had a successful 20+ year career in the automotive parts and technology industry, where he eventually bought and sold his own business. Once retired, he volunteered as tech support for a non-profit and his local school district. 

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20,964 messages 1 likes

You really can't compare CPU bunchmark results across multiple CPU platforms when testing RAM.
It's horrible science and gives completely useless numbers. All you really see there is that newer, more efficient, CPU cores work faster, more cores are better, and clock speeds trump all in single threaded stuff.
It tells you squat about DDR4 vs DDR3.
Worse still, there's no information about the CPU clock speeds used. Given the extreme difference in CPU benchmarks with CPU clock speed changes, and the quite significant difference CPU speed makes in memory benchmarks, this is inexcusable.

I realize that there are no platforms that can run both types of RAM. That does not excuse horrendous science.
A one line disclaimer at the bottom of the results does not excuse it, either.

I'd hoped to see some DDR4 related information, maybe something about the edge connector redesign for better reliability and contact on flexible motherboards.
Instead all I see is marketing, shiny pictures and woefully deceptive graphs.

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1,473 messages 0 likes

Thanks for the input, hopefully I'll have some more DDR4 samples soon and I can drop all comparisons to older platform stuff.

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12,919 messages 1,847 likes

I wish to also see comparison at the same CPU clock and amount of cores in AIDA64 or similar multithreaded benchmarks like 5960X at 6 cores vs 4960X or 4930K. One simple reason is that memory bandwidth at higher amount of cores will be always higher on benchmarks optimized for multi cores. It's like comparing memory speed on Pentium vs i5 in AIDA64 or WinRAR.
The only thing that can be compared correctly are single threaded benchmarks like SuperPi.

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