ASUS ROG Strix GeForce RTX vs ASUS ROG Strix GeForce RTX: Spec Comparison
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This asus rog strix geforce rtx vs rog strix rtx4080 o16g gaming comparison looks at two high-end cards from the same brand. You are choosing between the RTX 3090 and the RTX 4080. Both target serious gaming with robust build quality. The main difference lies in the underlying GPU architecture and memory configuration. The 3090 offers more video memory, while the 4080 provides newer generation performance efficiency. You need to weigh capacity against raw speed.
Key differences
| Aspect | ASUS ROG Strix GeForce RTX 3090 24GB | ASUS ROG Strix GeForce RTX 4080 Renewed |
|---|---|---|
| GPU | GeForce RTX 3090 | GeForce RTX 4080 |
| Memory Size | 24GB | not listed |
| Memory Type | GDDR6X | not listed |
| Length | 31.9 inches | 14.1 inches |
| Weight | 3.97 pounds | 5.5 pounds |
Which one should you choose?
Choose ASUS ROG Strix GeForce RTX 3090 24GB if
- You need maximum video memory for large textures or professional workloads.
- You prefer a lighter card that places less strain on your motherboard slot.
- You want the older 3090 architecture with its specific memory bandwidth characteristics.
Choose ASUS ROG Strix GeForce RTX 4080 Renewed if
- You prioritize the newer 4080 GPU architecture for higher frame rates.
- You have a standard ATX case and need a card that fits typical dimensions.
- You are buying a renewed unit and want the latest generation performance.
Verdict: Choose the RTX 3090 if you require the full 24GB of memory for specific creative or gaming tasks. Select the RTX 4080 for a more standard form factor and modern architecture efficiency. Your choice depends on whether memory capacity or generational performance matters more to you.
Specs: RTX 3090 vs RTX 4080
GPU Performance
The ASUS ROG Strix GeForce RTX 3090 24GB uses the GeForce RTX 3090 graphics processor. The ASUS ROG Strix GeForce RTX 4080 Renewed relies on the GeForce RTX 4080. These are distinct architectures from different generations. The RTX 3090 is part of the Ampere series, while the RTX 4080 belongs to the Ada Lovelace generation. You should check benchmark data for your specific games to see which processor delivers higher frame rates. The newer architecture in the 4080 often brings better efficiency and features like DLSS 3, but the 3090 remains a powerful option for high-resolution gaming.
Memory Capacity
Memory size is a critical factor for high-resolution textures and future-proofing. The ASUS ROG Strix GeForce RTX 3090 24GB comes with 24GB of video memory. The ASUS ROG Strix GeForce RTX 4080 Renewed has 16GB of VRAM. The 3090 offers significantly more memory headroom. This extra capacity is beneficial if you plan to play games at 4K resolution with ultra-high texture settings. It also helps in creative workflows that involve large datasets. If you stick to 1440p or standard 4K gaming, the 16GB on the 4080 may be sufficient, but the 3090 provides a larger buffer.
Memory Type
The type of memory affects bandwidth and data transfer speeds. The ASUS ROG Strix GeForce RTX 3090 24GB uses GDDR6X memory. Specific details for the memory type of the ASUS ROG Strix GeForce RTX 4080 Renewed are not listed in the provided data. GDDR6X is known for high bandwidth, which supports the high resolution capabilities of the 3090. You should verify the memory technology of the 4080 model from other sources to make a complete comparison. Generally, newer cards may use updated memory standards, but without the specific data point, we focus on the confirmed GDDR6X specification of the 3090.
Physical Length
Case compatibility is essential before purchasing a large graphics card. The ASUS ROG Strix GeForce RTX 3090 24GB measures 31.9 inches in length. The ASUS ROG Strix GeForce RTX 4080 Renewed measures 14.1 inches in length. The 3090 is exceptionally long and requires a very spacious case. You must measure your computer chassis carefully to ensure the 31.9-inch card fits without obstructing other components. The 4080 is much more compact, making it easier to install in standard mid-tower or even some smaller form-factor cases. The 4080 is the clear winner for users with space constraints.
Physical Height
Height determines how much vertical space the card occupies in your case. The ASUS ROG Strix GeForce RTX 3090 24GB has a height of 57.8 inches. The ASUS ROG Strix GeForce RTX 4080 Renewed has a height of 2.75 inches. The height specification for the 3090 appears unusual, possibly indicating a different measurement unit or a data anomaly, but it is significantly taller than the 4080 according to the provided data. The 4080 has a standard height of 2.75 inches. You should check your case's GPU clearance to ensure the 2.75-inch card fits comfortably. The 3090's listed height suggests it may not fit in many standard enclosures.
Weight
Heavy graphics cards can strain PCIe slots and require support brackets. The ASUS ROG Strix GeForce RTX 3090 24GB weighs 3.97 pounds. The ASUS ROG Strix GeForce RTX 4080 Renewed weighs 5.5 pounds. The 4080 is noticeably heavier than the 3090. You will likely need a robust GPU support bracket for the 4080 to prevent sagging. The 3090 is lighter, which may reduce stress on your motherboard's PCIe slot. Consider the weight when planning your build setup, especially if you have a lightweight case or are moving the computer frequently.
Which ASUS ROG Strix RTX Card Fits You
High-resolution gaming and content creation users
This card features 24GB of GDDR6X memory, which provides significant buffer space for 4K textures and large datasets. The RTX 3090 processor handles demanding workloads efficiently. If you need maximum memory capacity for professional tasks or ultra-high-resolution gaming, this specification is essential for your workflow stability.
Users prioritizing physical fit in smaller cases
The RTX 4080 model measures 14.1 inches in length, making it noticeably shorter than the 31.9-inch RTX 3090. This compact form factor allows for easier installation in mid-tower cases. If your chassis has strict length limitations, the smaller dimensions of this card ensure a proper fit without obstruction.
Buyers seeking the latest generation architecture
This unit uses the GeForce RTX 4080 processor, representing a newer generation compared to the RTX 3090. Newer architectures often offer improved efficiency and features. If you value modern technology and performance per watt from the latest release, this GPU aligns with your preference for current-generation hardware capabilities.
The products compared
ASUS ROG Strix GeForce RTX 3090 24GB
Best for: Large cases needing 24GB VRAM
- Graphics Processor
- GeForce RTX 3090
- Memory Size
- 24GB
- Memory Type
- GDDR6X
- Use
- Gaming
- Dimensions
- 31.9 × 14 × 57.8 inches
- Weight
- 3.97 pounds
View on Amazon: ASUS ROG Strix GeForce RTX 3090 24GB Affiliate link
This ASUS ROG Strix GeForce RTX 3090 features 24GB of GDDR6X memory. It is designed for high-end gaming. The card measures 31.9 inches in length and weighs 3.97 pounds. You need a large case to fit this size. The 24GB buffer handles heavy textures and high resolutions well. It suits users who prioritize memory capacity for gaming.
Pros
- 24GB GDDR6X memory for high-resolution textures
- GeForce RTX 3090 graphics processor
- Axial-tech cooling fans
- OC Edition for higher clock speeds
Cons
- 31.9-inch length requires a large case
- 3.97-pound weight may stress PCIe slots
- Older RTX 3090 architecture compared to newer models
Good fit if
- You need 24GB of VRAM for 4K gaming
- You have a large computer case
- You want ASUS ROG Strix build quality
Skip if
- You have a small form factor case
- You prefer newer RTX 40 series cards
- You want a lighter graphics card
Verdict: ASUS ROG Strix RTX 3090 24GB offers substantial 24GB VRAM for demanding games. It fits users with large cases who need high memory capacity.
ASUS ROG Strix GeForce RTX 4080 Renewed
Best for: spacious cases needing 16GB VRAM
- GPU
- GeForce RTX 4080
- Use
- Gaming
- Dimensions
- 14.1 × 5.87 × 2.75 inches
- Weight
- 5.5 pounds
View on Amazon: ASUS ROG Strix GeForce RTX 4080 Renewed Affiliate link
This ASUS ROG Strix GeForce RTX 4080 is a renewed gaming graphics card. It features a 16GB GDDR6X memory configuration. The physical dimensions are 14.1 inches long, 5.87 inches wide, and 2.75 inches high. It weighs 5.5 pounds. This large card suits users with spacious cases who need high-end performance for gaming.
Pros
- GeForce RTX 4080 GPU core
- 16GB memory capacity
- ROG Strix build quality
- Black color finish
Cons
- 14.1-inch length requires large cases
- 5.5-pound weight may stress slots
- Renewed condition instead of new
Good fit if
- You have a spacious PC case
- You need 16GB of VRAM
- You want high-end gaming performance
Skip if
- You have a small form factor case
- You prefer brand new hardware
- You need a compact graphics card
Verdict: ASUS ROG Strix RTX 4080 Gaming fits users with large cases who need 16GB of VRAM for gaming. It is a heavy, long card that demands space.
Specifications side by side
| Spec | ASUS ROG Strix GeForce RTX 3090 24GB | ASUS ROG Strix GeForce RTX 4080 Renewed |
|---|---|---|
| Graphics Processor | GeForce RTX 3090 | not stated |
| Memory Size | 24GB | not stated |
| Memory Type | GDDR6X | not stated |
| Memory | 24GB | not stated |
| GPU | GeForce RTX 3090 | GeForce RTX 4080 |
| Use | Gaming | Gaming |
| Dimensions | 31.9 × 14 × 57.8 inches | 14.1 × 5.87 × 2.75 inches |
| Weight | 3.97 pounds | 5.5 pounds |
| Size | not stated | Black |
| Color | not stated | ROG-STRIX-RTX4080-O16G-GAMING |
Frequently asked questions
Which card is physically larger, the RTX 3090 or the RTX 4080?
The ASUS ROG Strix GeForce RTX 3090 is significantly larger than the RTX 4080. The 3090 measures 31.9 inches in length, while the RTX 4080 is 14.1 inches long. You must check your case dimensions carefully, as the 3090 requires much more internal space. The 4080 is a more compact option for smaller builds.
Does the RTX 3090 have more video memory than the RTX 4080?
Yes, the RTX 3090 features 24GB of GDDR6X memory, whereas the RTX 4080 has 16GB. This extra capacity makes the 3090 better for large datasets and high-resolution textures. If you need maximum buffer space for demanding games or content creation, the 3090 provides a clear advantage in memory size.
Is the RTX 3090 heavier than the RTX 4080?
No, the RTX 4080 is heavier than the RTX 3090. The RTX 4080 weighs 5.5 pounds, while the RTX 3090 weighs 3.97 pounds. You should ensure your motherboard and case can support the weight of the heavier card. The 4080 demands more physical support due to its mass.
What type of memory do both cards use?
The ASUS ROG Strix GeForce RTX 3090 uses GDDR6X memory. The product data confirms this specific memory type for the 3090. While the RTX 4080 is also a modern gaming card, the 3090 explicitly lists GDDR6X. This high-speed memory supports demanding gaming workloads effectively.
Can the RTX 3090 fit in a small case?
The RTX 3090 is unlikely to fit in a small case due to its size. It measures 31.9 inches in length and 14 inches in width. This card is best for large cases needing 24GB VRAM. You need a spacious chassis to accommodate its substantial dimensions without blocking other components.
Which card is better for users with spacious cases?
The RTX 4080 is described as fitting users with large cases needing 16GB VRAM. It is a heavy, long card that demands space, though it is shorter than the 3090. If you have a roomy chassis and need robust gaming performance, the 4080 is a suitable high-end choice.

