Setup and test results …
Get fast to the desired test …
AMD Radeon RX 6600 graphics card Test system
AMD Radeon RX 6600 graphics card Benchmark Software
AMD Radeon RX 6600 Benchmarks
AMD Radeon RX 6600 Overclocking
ASRock Radeon RX 6600 Heat generation
AMD RX 6600 graphics card test system …
The ASRock Radeon RX 6600 Challenger D 8G was tested on the following systems:
| Motherboard | ASRock Z490 Steel Legend Intel LGA1200 Mainboard |
| CPU | Intel Core i5-10500 CPU |
| RAM | Ballistix Tactical Tracer RGB 2x 8GB DDR4-2666 in Dualchannel Mode |
| SSD | Crucial BX500 1TB SSD |
| PSU | Cooler Master Silent Pro M 600W |
| Case | Cooler Master MasterBox 540 |
| Cooling | Cooler Master Hyper 212 Evo V2 |
| Operating system | Windows 11 – Version 21H2 22000.675 |
AMD RX 6600 graphics card Benchmark Software …
Software:
PCMark
3DMark Timespy
CPU-Z und GPU-Z
Unigine Heaven Benchmark – 2560×1440 WQHD Setting
Unigine Super Position Benchmark – 1080p Medium Setting
All benchmark programs can be found here on the OC Tool Download page.
In default mode, the GPU clocks at about 2596 MHz and RAM at about 1748 MHz, leaving the 100W power limit untouched.
ASRock Radeon RX 6600 Benchmark …
We start right away and collect reference values in the default setting and score 6450 points in Futuremark PCMark and now UL PCMark.
With 3DMark Timespy v1.2 we achieve 7813 points in the default setting.
Unigine Heaven benchmark achieves 3102 points with the default setting at WQHD resolution.
In the Unigine Super Position Benchmark, we reach 14074 points with default under 1080P Medium.
ASRock Radeon RX 6600 graphics card overclocking …
Since even the Silent Mode and the OC Mode are very close to each other, we directly used the User Mode to overclock the ASRock Radeon RX 6600 Challenger D 8G graphics card. In User Mode, we can adjust the sliders ourselves. A maximum of 2750 MHz GPU clock and 1900 MHz RAM clock are allowed, whereby the power limit can be increased by a maximum of 20% to 120W. Under load, the GPU clock goes up to 2701 MHz and the RAM clock up to 1892 MHz until the power limit throttles mercilessly.
With the OC settings, we now reach 8285 points in 3DMark Timespy v1.2 instead of 7813, which is at least a good 6% more performance without CPU overclocking and about 7% more GPU performance.
Unigine Heaven benchmark achieves 3293 points instead of 3102 with the OC setting in WQHD resolution, which is also a good 6% more performance.
In the Unigine Super Position benchmark, we achieved 15081 points with the OC settings under 1080P Medium instead of 14074, which is a good 7% more performance.
For a better overview, we have summarized the values here again in a small table.
| ASRock Radeon RX 6600 Challenger D 8G benchmark results | |||||||
| Mode | GPU MHz | RAM MHz | Powerlimit | Temperature | 3DMark Timespy | Unigine Heaven | SuperPosition |
| Default Mode | 2596 | 1748 | 100W (0% increase) | 46°C | 7813 | 3102 | 14074 |
| Custom OC Mode | 2701 | 1892 | 120W (20% increase) | 48°C | 8285 | 3293 | 15081 |
The performance increase is quite respectable for 3 clicks. Since the power limit locks at values above that anyway, a higher overclocking would hardly be noticeable.
Heat development of the ASRock Radeon RX 6600 graphics card …
Of course, the graphics card overclocking also increases the temperature and only a sophisticated cooling concept can help, which is also shown by the thermal image.
If you look at the thermal image of the graphics card’s back, you’ll immediately notice the slightly higher temperature of the cooling fins in the rear area, which, however, only heat up slightly with the AMD Radeon RX 6600. This is also reflected in the fan’s behavior, because the fan does not even have to run during the relatively short benchmark load of a few minutes. The Challenger D’s cooling fins already manage a large part of the heat dissipation without the two 100mm fans.
In summary, we can state up to this point: The cooling and control of the fans can cool the graphics card completely adequately under any load, there is no overheating-related downclocking and resulting performance loss, and the maximum power limit increase of 20% limits overclocking.
Speaking of overclocking and higher power target … there was something else? Oh yes, the power consumption, which is more interesting than ever, especially nowadays with ever increasing electricity prices.
Let’s now take a look at the ASRock Radeon RX 6600 power consumption …
ASRock Radeon RX 6600 Challenger D 8G power consumption …