GRID P4-8Q vs Radeon HD 8990

G3D Mark is a standard benchmark that measures graphics performance in real-world gaming scenarios. It simplifies comparing cards from different brands, where higher scores directly correlate with better fps and smoother gaming experiences.

GRID P4-8Q vs Radeon HD 8990 FPS Benchmarks

Predicted gaming performance across popular games. Tested paired with Ryzen 7 9800X3D to isolate GPU performance.

Search any supported game below to compare 1080p FPS for both components.

GRID P4-8Q vs Radeon HD 8990: Pros, Cons & Final Verdict

See where each GPU makes more sense in practice: raw FPS, VRAM, features, power draw, pricing, and long-term headroom.

GRID P4-8Q

2015

Why buy it

✅33.3% more VRAM for high-resolution textures and newer games (4 GB vs 3 GB).
✅Draws 100W instead of 375W, a 275W reduction.
✅More future proof: Maxwell 2.0 (2014−2019) on 28nm with a newer platform for upcoming games.

Trade-offs

❌2015 hardware with 4 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌
100.2% HIGHER MSRP
$2,000 MSRPvs$999 MSRP
❌Lower G3D Mark per dollar, at 2.6 vs 5.2 G3D/$ ($2,000 MSRP vs $999 MSRP).

Radeon HD 8990

2013

Why buy it

✅Costs $1,001 less on MSRP ($999 MSRP vs $2,000 MSRP).
✅Delivers 97.6% more G3D Mark for each dollar spent, at 5.2 vs 2.6 G3D/$ ($999 MSRP vs $2,000 MSRP).

Trade-offs

❌Less VRAM, with 3 GB vs 4 GB for high-resolution textures and newer games.
❌2013 hardware with 3 GB of VRAM is already well past its comfortable zone for modern gaming, so it is hard to recommend now.
❌275% higher power demand at 375W vs 100W.

Quick Answers

Which GPU is faster for gaming right now?

GRID P4-8Q is the faster gaming card right now based on the synthetic data we have. It leads by 1.3% in PassMark G3D (5,283 vs 5,214), which is the best performance signal available in this matchup.

Which GPU is the safer long-term pick for 2026 and beyond?

GRID P4-8Q is the safer long-term pick for 2026 and beyond. The case is simple: 4 GB vs 3 GB of VRAM and a newer 2015 generation instead of 2013. That gives it more room for heavier textures and higher settings over time.

Which GPU is the better buy today?

Radeon HD 8990 makes the most sense to buy today. It is $1,001 cheaper on MSRP at $999 vs $2,000, and it leads G3D-per-dollar by 97.6% (5.2 vs 2.6), which is enough to swing the recommendation its way. If you are mainly targeting 1080p and some 1440p, Radeon HD 8990 is the easier value choice. If you care more about 1080p and some 1440p headroom, GRID P4-8Q has the stronger long-term case.

GRID P4-8Q vs Radeon HD 8990 Technical Specifications

Side-by-side specs, architecture details, clocks, memory, power, and platform differences.

GRID P4-8Q

The GRID P4-8Q is manufactured by NVIDIA. It was released in August 30 2015. It features the Maxwell 2.0 architecture. The core clock speed is 722 MHz. It has 1536 shading units. The thermal design power (TDP) is 100W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 5,283 points.

Radeon HD 8990

The Radeon HD 8990 is manufactured by AMD. It was released in April 24 2013. It features the GCN 1.0 architecture. The core clock ranges from 950 MHz to 1000 MHz. It has 2048 ×2 shading units. The thermal design power (TDP) is 375W. Manufactured using 28 nm process technology. G3D Mark benchmark score: 5,214 points. Launch price was $999.

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Graphics Performance

The GRID P4-8Q scores 5,283 and the Radeon HD 8990 reaches 5,214 in the G3D Mark benchmark — just a 1.3% difference, making them near-identical in rasterization performance. The GRID P4-8Q is built on Maxwell 2.0 while the Radeon HD 8990 uses GCN 1.0, both on a 28 nm process. Shader units: 1,536 (GRID P4-8Q) vs 2,048 (Radeon HD 8990). Raw compute: 2.218 TFLOPS (GRID P4-8Q) vs 4.096 TFLOPS ×2 (Radeon HD 8990).

Feature	GRID P4-8Q	Radeon HD 8990
G3D Mark Score	5,283+1%	5,214
Architecture	Maxwell 2.0	GCN 1.0
Process Node	28 nm	28 nm
Shading Units	1536	2048 ×2+33%
Compute (TFLOPS)	2.218 TFLOPS	4.096 TFLOPS ×2+85%
ROPs	64+100%	32 ×2
TMUs	96	128 ×2+33%
L1 Cache	576 KB+13%	512 KB
L2 Cache	2 MB+167%	0.75 MB

✨

Advanced Features (DLSS/FSR)

Feature	GRID P4-8Q	Radeon HD 8990
Upscaling Tech	Upscaling support	FSR Upscaling / FSR 4
Frame Generation	Not Supported	Not Supported
Ray Reconstruction	No	No
Low Latency	Standard	AMD Anti-Lag

💾

Video Memory (VRAM)

The GRID P4-8Q has 4 GB of VRAM, while the Radeon HD 8990 carries 3 GB. GRID P4-8Q gives you 33.3% more memory capacity, which matters more once you move into heavier textures, mods, or higher resolutions. Memory bus width is 128-bit on the GRID P4-8Q and 384-bit x2 on the Radeon HD 8990. L2 Cache: 2 MB (GRID P4-8Q) vs 0.75 MB (Radeon HD 8990) — the GRID P4-8Q has significantly larger on-die cache to reduce VRAM reliance.

Feature	GRID P4-8Q	Radeon HD 8990
VRAM Capacity	4 GB+33%	3 GB
Memory Type	GDDR6	GDDR5
Bus Width	128-bit	384-bit x2+200%
L2 Cache	2 MB+167%	0.75 MB

🔌

Power & Dimensions

The GRID P4-8Q draws 100W versus the Radeon HD 8990's 375W — a 115.8% difference. The GRID P4-8Q is more power-efficient. Recommended PSU: 350W (GRID P4-8Q) vs 750W (Radeon HD 8990). Power connectors: PCIe-powered vs 2x 8-pin.

Feature	GRID P4-8Q	Radeon HD 8990
TDP	100W-73%	375W
Recommended PSU	350W-53%	750W
Power Connector	PCIe-powered	2x 8-pin
Perf/Watt	52.8+280%	13.9

💰

Value Analysis

At launch, the GRID P4-8Q came in at $2000, while the Radeon HD 8990 launched at $999. On MSRP, Radeon HD 8990 was 50% cheaper ($1001 less). Performance per dollar on MSRP (G3D Mark / MSRP): 2.6 (GRID P4-8Q) vs 5.2 (Radeon HD 8990) — the Radeon HD 8990 offers 100% better value. The newer card here is GRID P4-8Q (2015 vs 2013).

Feature	GRID P4-8Q	Radeon HD 8990
MSRP	$2000	$999-50%
Performance per Dollar	2.6	5.2+100%
Codename	GM204	Malta
Release	August 30 2015	April 24 2013
Ranking	#535	#412

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