ASUS ROG Strix Radeon RX Vega 64 OC video card review

Intro

The ASUS ROG Strix Radeon RX Vega 64 OC is a video card based on the most recent generation of GPUs from AMD. It has 4,096 cores and 8 GiB HBM2 memory. Let’s check how fast is it.

There are, to date, two models of GPUs of the new family from AMD: Radeon RX Vega 56 and Radeon RX Vega 64. While the Vega 56 models have (hence their name) 56 compute units and 3,584 cores, the Vega 64 models have 64 compute units and 4,096 cores. There are also integrated GPUs based on the same architecture, present on AMD’s Ryzen 3 2200G and Ryzen 5 2400G desktop CPUs, and on some Intel (yes, you read right) mobile CPUs like the Core i7-8809G.

The reference model for the Radeon RX Vega 64 has a base clock of 1,247 MHz and a turbo clock of 1,546 Mhz. The model we are testing (ASUS ROG Strix Radeon RX Vega 64 OC) has an advertised clock of 1,590 MHz (they didn’t say if it is the base clock or the turbo clock,) but the clock shown on GPU-Z was 1,630 MHz. So, this video card has an overclocking of around 5%.

 

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The Radeon RX Vega video cards use HBM2 memory. On the Vega 64, this memory works at 1,890 MHz with a bus width of 2,048 bits, which gives a bandwidth of 483,8 GiB/s. The model we tested uses 8 GiB of VRAM on the reference clock.

The TDP of the Vega 64 GPU is 295 W, and the minimum recommended power for the power supply is 750 W.

Figure 1 shows the ASUS ROG Strix Radeon RX Vega 64 OC. The areas around the fans lit on programmable colors and patterns.

Figure 1: the ASUS ROG Strix Radeon RX Vega 64 OC

The closest competitor of the Radeon RX Vega 64 is the GeForce GTX 1080 Ti. So, we are comparing there two video cards, also including the GeForce GTX 1070 Ti, and the GeForce GTX 1080, to see which one is the best buy.

In the table below, we compare the main specs from the video cards we included in this review. Prices were researched at Newegg.com for this article.

Video card	Core clock	Turbo clock	Effective memory clock	Memory bus	Memory bandwidth	Memory	Processing cores	TDP	DirectX	Price
ASUS ROG Strix Radeon RX Vega 64 OC	1,590 MHz	1,630 MHz	1.89 GHz	2.048 bit	483.8 GB/s	8 GiB HBM2	4.096	295 W	12	USD 1,060
GeForce GTX 1080 Ti FE	1,480 MHz	1,582 MHz	11.0 GHz	352 bit	484 GB/s	11 GiB GDDR5X	3,584	250 W	12.1	USD 960
GeForce GTX 1080 FE	1,607 MHz	1,733 MHz	10.0 GHz	256 bit	320 GB/s	8 GiB GDDR5X	2,560	180 W	12.1	USD 670
GeForce GTX 1070 Ti	1,607 MHz	1,683 MHz	8.0 GHz	256 bit	256 GB/s	8 GiB GDDR5	2,432	180 W	12.1	USD 600

Now let’s take a closer look to the tested video card.

The ASUS ROG Strix Radeon RX Vega 64 OC is 11.8 inches (300 mm) long and uses three slots. It uses three 90 mm fans with red LEDs.

Figure 2 shows the video connectors of the ASUS ROG Strix Radeon RX Vega 64 OC. It brings one DVI-D, two HDMI 2.0, and two DisplayPort connectors.

Figure 2: video connectors

In Figure 3, you see the top of the card, where there are two eight-pin PCI Express power connectors. The logos lit when the card is powered on, and you can select the color and light effect for them.

Figure 3: top view

Figure 4 shows the bottom of the card. Here there is an RGB LED stripe connector and two connectors for extra fans, which is great because you can automatically control the case fans according to the video card temperature.

Figure 4: rear view

Figure 5 shows the solder side of the ASUS ROG Strix Radeon RX Vega 64 OC, which is
covered by a backplate. Here we also have a logo lit by programmable RGB LEDs.

Figure 5: backplate

Figure 6 shows the solder side with the backplate removed.

Figure 6: solder side

Figure 7 shows the ASUS ROG Strix Radeon RX Vega 64 OC with its cooler removed. It is a huge cooler with six heatpipes, that touches the GPU and the HBM2 memory chips (which are all in the same package,) and also the transistors on the voltage regulator circuit. Under the cooler, there is also a metal frame that helps to distribute the heat.

Figure 7: cooler removed

In Figure 8, you see the PCB without this metal frame.

Figure 8: metal frame removed

Figure 9 unveils the Radeon RX Vega 64 chip, with the two HBM2 chips (each one with 4 GiB or VRAM) next to it.

Figure 9: the Radeon RX Vega 64 chip

Figure 10 shows the voltage regulator of the ASUS ROG Strix Radeon RX Vega 64 OC. It uses 12+1 phases.

Figure 10: voltage regulator

During our benchmarking sessions, we used the configuration listed below. Between the tests, the only variable component was the video card being tested.

Hardware Configuration

• CPU: Core i9-7800X running at 4.6 GHz
• Motherboard: Gigabyte X299 AORUS Gaming 7
• CPU Cooler: Thermaltake Water 3.0 Ultimate
• Memory: 64 GiB DDR4-3000 HyperX Predator, four KHX3000C15/16GX 16 GiB modules running at 2666 MHz
• Boot drive: Samsung 960 EVO 500 GB
• Case: Thermaltake Core P3
• Video Monitor: Samsung U28D590
• Power Supply: Corsair CX750

Operating System Configuration

• Windows 10 Home 64-bit

Driver Versions

• AMD driver version: 18.1.1
• NVIDIA driver version: 388.71

Software Used

• 3DMark
• Deus Ex: Mankind Divided
• F1 2017
• GTA V
• Hitman
• Mad Max
• Rise of the Tomb Rider
• Tom Clancy’s Rainbow Six Siege
• The Witcher 3: Wild Hunt

Error Margin

We adopted a 3% error margin; thus, differences below 3% cannot be considered relevant. In other words, products with a performance difference below 3% should be considered as having similar performance.

3DMark is a program with a set of several 3D benchmarks. We ran the Time Spy, Fire Strike Extreme and Sky Diver benchmarks.

The Time Spy benchmark measures DirectX 12 native performance, running at 2560 x 1440 resolution. In this benchmark, the ASUS ROG Strix Radeon RX Vega 64 OC was 17% slower than the GeForce GTX 1080 Ti.

The Fire Strike Ultra benchmark measures DirectX 11 performance and is aimed at high-end gaming computers. It runs at 4K UHD resolution. In this test, the ASUS ROG Strix Radeon RX Vega 64 OC was 20% slower than the GeForce GTX 1080 Ti.

The 3DMark Sky Diver benchmark is aimed at mainstream PCs with DirecX 11 simulations. It runs at 1920 x 1080 Ti. In this test, the ASUS ROG Strix Radeon RX Vega 64 OC was 13% slower than the GeForce GTX 1080 Ti.

Last update on 2026-05-20 at 10:17 / Affiliate links / Images from Amazon Product Advertising API