ASRock AMD Radeon™ RX 7900 or ASRock Radeon RX 7900 XTX? Which ASRock Model to Buy
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
You are deciding between the asrock amd radeon rx 7900 vs radeon rx 7900 xtx. Both cards use the Phantom Gaming design with GDDR6 memory and zero-degree fan modes for silent operation. The main difference lies in performance tier. The RX 7900 XT offers 20GB of VRAM, while the RX 7900 XTX provides 24GB. You also need to check physical dimensions carefully, as the XTX model is significantly longer. This guide breaks down the spec differences to help you choose.
Key differences
| Aspect | ASRock RX 7900 XT Phantom Gaming | ASRock Radeon RX 7900 XTX Phantom Gaming 24GB |
|---|---|---|
| GPU Model | Radeon RX 7900 XT | Radeon RX 7900 XTX |
| Memory Size | 20GB | 24GB |
| Memory Bus Width | 320-bit | 384-bit |
| Boost Clock | not listed | 2615 MHz |
| Length | 9.45 inches | 13 inches |
| Width | 27.2 inches | 2.28 inches |
Which one should you choose?
Choose ASRock RX 7900 XT Phantom Gaming if
- You have a smaller PC case that cannot fit a 13-inch card.
- You want a slightly lower power requirement with a 320-bit memory bus.
- You prioritize the shorter physical footprint for your build.
Choose ASRock Radeon RX 7900 XTX Phantom Gaming 24GB if
- You need 24GB of VRAM for high-resolution texture work.
- You want the higher 2615 MHz boost clock for elite 4K gaming.
- You require a wider 384-bit memory bus for exceptional bandwidth.
Verdict: The RX 7900 XT is the practical choice for most users due to its shorter length and lower power needs. The RX 7900 XTX suits those who need maximum 4K performance and extra video memory. Check your case dimensions before buying the larger XTX model.
ASRock RX 7900 XT vs XTX Specs
GPU performance
The ASRock Radeon RX 7900 XTX Phantom Gaming 24GB uses the flagship AMD Radeon RX 7900 XTX graphics processor. It features a boost clock of 2615 MHz and includes 96 compute units with RT and AI accelerators. This card also utilizes 96MB of AMD Infinity Cache technology. In contrast, the ASRock RX 7900 XT Phantom Gaming relies on the Radeon RX 7900 XT GPU. The data does not list the specific boost clock or compute unit count for the XT model. However, the XTX’s higher clock speed and flagship architecture generally indicate superior raw rendering power for high-resolution gaming.
Memory capacity
Memory size is a key differentiator between these two cards. The ASRock Radeon RX 7900 XTX Phantom Gaming 24GB comes equipped with 24GB of GDDR6 memory. This larger buffer helps handle high-resolution textures in modern games and content creation tasks. The ASRock RX 7900 XT Phantom Gaming offers 20GB of GDDR6 memory. While both use the same memory type, the XTX provides 4GB more video memory. This extra capacity can be beneficial for 4K gaming or when running applications that require significant VRAM allocation.
Memory interface
The memory bus width affects data transfer rates between the GPU and video memory. The ASRock Radeon RX 7900 XTX Phantom Gaming 24GB features a 384-bit memory bus. This wider interface supports exceptional bandwidth, which is crucial for maintaining performance at high resolutions. The ASRock RX 7900 XT Phantom Gaming uses a 320-bit memory bus. Although both cards deliver high-speed memory performance, the XTX’s wider bus width allows for greater data throughput. This technical advantage supports its role as the higher-end model in the ASRock Phantom Gaming lineup.
Physical length
Case compatibility is important when choosing a graphics card. The ASRock RX 7900 XT Phantom Gaming has a length of 9.45 inches. This shorter profile makes it easier to fit into smaller mid-tower cases or builds with limited clearance. The ASRock Radeon RX 7900 XTX Phantom Gaming 24GB is significantly longer at 13 inches. You must ensure your chassis can accommodate this larger card. The XT model offers better flexibility for users with compact PC builds or those who prefer a less dominant visual presence inside the case.
Power requirements
Power supply compatibility is essential for stable operation. The ASRock Radeon RX 7900 XTX Phantom Gaming 24GB recommends an 800W power supply unit. This higher wattage reflects the power demands of the flagship GPU and its higher clock speeds. The ASRock RX 7900 XT Phantom Gaming data does not specify a recommended PSU wattage. However, the XT model generally consumes less power than the XTX variant. If you have a lower-wattage power supply or want to reduce overall system power consumption, the XT may be the more compatible choice for your existing hardware.
Which ASRock Graphics Card Fits You
You want the highest 4K performance
The ASRock Radeon RX 7900 XTX Phantom Gaming 24GB uses the flagship AMD Radeon RX 7900 XTX graphics processor. It features a boost clock of 2615 MHz and includes 96 compute units with RT and AI accelerators. The 24GB GDDR6 memory on a 384-bit bus provides higher bandwidth for elite 4K gaming and content creation tasks.
You prefer a smaller card size
The ASRock RX 7900 XT Phantom Gaming is more compact. It measures 9.45 inches in length, 27.2 inches in width, and 0.98 inches in height. This form factor fits better in smaller cases. It still offers 20GB of GDDR6 memory and uses the Radeon RX 7900 XT GPU for solid gaming performance without taking up excessive space.
You need a lower power supply
The ASRock RX 7900 XT Phantom Gaming is the better choice if you have a lower wattage power supply. The XTX model explicitly recommends an 800W PSU. The XT model does not list a high wattage requirement in its specifications. This makes the XT a more practical option for systems with standard power units.
The products compared
ASRock RX 7900 XT Phantom Gaming
Best for: 4K gaming with silent cooling
- Graphics Processor
- RX 7900 XT
- Memory Size
- 20GB
- Memory Type
- GDDR6
- Memory Bus Width
- 320-bit
- PCIe Interface
- PCI Express 4.0
- GPU
- Radeon RX 7900 XT
View on Amazon: ASRock RX 7900 XT Phantom Gaming Affiliate link
This ASRock graphics card uses the Radeon RX 7900 XT GPU with 20GB of GDDR6 memory. It supports 4K resolution at 7680 x 4320. The card measures 9.45 inches long and 0.98 inches high. It weighs 3.09 pounds. You will get 320-bit memory bus bandwidth. This model targets gaming performance with silent cooling features.
Pros
- 20GB GDDR6 memory capacity
- Supports 4K resolution output
- 320-bit memory bus width
- 0dB silent cooling technology
Cons
- 20GB memory is less than the 24GB on the XTX model
- 9.45 inch length requires spacious cases
- 3.09 pound weight adds chassis load
Good fit if
- You want 4K gaming performance
- You need 20GB of video memory
- You prefer silent operation under load
Skip if
- You require 24GB of VRAM
- Your case cannot fit a 9.45 inch card
- You need a lighter graphics card
Verdict: ASRock RX 7900 XT Phantom Gaming 20GB suits gamers who prioritize high-resolution output and silent cooling. It fits users who can accommodate its physical dimensions and weight.
ASRock Radeon RX 7900 XTX Phantom Gaming 24GB
Best for: 4K gaming and high-refresh-rate displays
- Graphics Processor
- AMD Radeon RX 7900 XTX
- Memory Size
- 24GB
- Memory Type
- GDDR6
- Boost Clock
- 2615 MHz
- Memory Bus Width
- 384-bit
- Recommended PSU
- 800W
View on Amazon: ASRock Radeon RX 7900 XTX Phantom Gaming 24GB Affiliate link
The ASRock Radeon RX 7900 XTX Phantom Gaming features 24GB of GDDR6 memory on a 384-bit bus. Its 2615 MHz boost clock supports elite 4K gaming. The card includes 3x DisplayPort 2.1 and 1x HDMI 2.1 outputs. It uses the RDNA 3 architecture with 96 compute units. This model suits gamers who need high bandwidth and modern display connectivity for high-refresh-rate monitors.
Pros
- 24GB GDDR6 memory on a 384-bit bus
- 2615 MHz boost clock for high performance
- 3x DisplayPort 2.1 and 1x HDMI 2.1 outputs
- 0dB Silent Cooling for low-intensity tasks
Cons
- Requires an 800W recommended PSU
- Large 13-inch length may not fit small cases
- Heavy 3.42-pound build needs sturdy support
Good fit if
- You want 24GB VRAM for 4K gaming
- You need DisplayPort 2.1 for high-refresh monitors
- You prefer silent operation during light tasks
Skip if
- You have a power supply under 800W
- Your case cannot fit a 13-inch card
- You need a smaller form factor solution
Verdict: ASRock RX 7900 XTX 24GB Gaming Card delivers flagship 4K performance with ample VRAM. It fits users with spacious cases and 800W power supplies who demand high bandwidth and modern display outputs.
Specifications side by side
| Spec | ASRock RX 7900 XT Phantom Gaming | ASRock Radeon RX 7900 XTX Phantom Gaming 24GB |
|---|---|---|
| Graphics Processor | RX 7900 XT | AMD Radeon RX 7900 XTX |
| Memory Size | 20GB | 24GB |
| Memory Type | GDDR6 | GDDR6 |
| Boost Clock | not stated | 2615 MHz |
| Memory Bus Width | 320-bit | 384-bit |
| PCIe Interface | PCI Express 4.0 | not stated |
| Recommended PSU | not stated | 800W |
| Memory | not stated | 24GB |
| GPU | Radeon RX 7900 XT | not stated |
| Use | Gaming | Gaming |
| Dimensions | 9.45 × 27.2 × 0.98 inches | 13 × 2.28 × 0.1 inches |
| Weight | 3.09 pounds | 3.42 pounds |
| Color | not stated | Black |
| Model | not stated | RX7900XTX PG 24GO |
Frequently asked questions
Which card is better for 4K gaming?
The ASRock Radeon RX 7900 XTX Phantom Gaming 24GB is the top choice for 4K gaming. It delivers flagship performance with 24GB of GDDR6 memory. This ample VRAM supports high-refresh-rate displays and modern gaming workloads. The RX 7900 XT is also suitable for 4K but prioritizes silent cooling.
What is the difference in VRAM between the two models?
The RX 7900 XTX features 24GB of GDDR6 memory, while the RX 7900 XT has 20GB. The extra 4GB on the XTX provides higher bandwidth and more buffer for texture-heavy games. This makes the XTX better for future-proofing at higher resolutions.
Which card is quieter during operation?
The ASRock RX 7900 XT Phantom Gaming is designed for silent cooling. It suits users who prioritize low noise levels during high-resolution output. Both cards include zero-degree fan modes, but the XT model is specifically highlighted for its quiet performance in gaming scenarios.
Which card requires more case space?
The RX 7900 XTX is significantly larger, measuring 13 inches in length. It also weighs 3.42 pounds. The RX 7900 XT is more compact at 9.45 inches long and weighs 3.09 pounds. You need a spacious case to accommodate the XTX without issues.
What power supply is recommended for the XTX?
The ASRock Radeon RX 7900 XTX Phantom Gaming 24GB requires an 800W power supply. This is necessary to support its flagship performance and high bandwidth demands. The XT model has lower power requirements, making it compatible with a wider range of standard power units.
Are both cards suitable for high-refresh-rate displays?
The RX 7900 XTX is explicitly best for high-refresh-rate displays due to its flagship status. It includes modern display outputs to handle high bandwidth. The RX 7900 XT is also capable of high-resolution gaming, but the XTX is the better fit for maximizing refresh rates.